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Information on EC 2.4.1.144 - beta-1,4-mannosyl-glycoprotein 4-beta-N-acetylglucosaminyltransferase
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EC Tree
2.4.1.144 beta-1,4-mannosyl-glycoprotein 4-beta-N-acetylglucosaminyltransferaseIUBMB Comments
The enzyme, found in vertebrates, participates in the processing of N-glycans in the Golgi apparatus. The residue added by the enzyme at position 4 of the beta-linked mannose of the trimannosyl core of N-glycans is known as a bisecting GlcNAc. Unlike GlcNAc residues added to other positions, it is not extended or modified. In addition, its presence prevents the action of other branching enzymes involved in the process such as GlcNAc-T IV (EC 2.4.1.145) and GlcNAc-T V (EC 2.4.1.155), and thus increased activity of GlcNAc-T III leads to a decrease in highly branched N-glycan structures.
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Word Map
- 2.4.1.144
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bisect
- n-glycans
- glycosyltransferases
- n-acetylglucosamine
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fucosyltransferase
- gnt-iv
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beta-linked
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xenoantigens
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tetraantennary
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e4-pha
- medicine
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alpha-galactosylation
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antennary
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glcnac-tiii
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trimannosyl
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erythroagglutinating
- alpha-gal
- diagnostics
- synthesis
The expected taxonomic range for this enzyme is: Eukaryota, Bacteria
Synonyms
gnt-iii, n-acetylglucosaminyltransferase iii, gntiii, beta1,4-n-acetylglucosaminyltransferase iii, n-acetylglucosaminyltransferase-iii, beta-1,4-n-acetylglucosaminyltransferase iii, glcnac-transferase-iii, beta-1,4-mannosyl-glycoprotein 4-beta-n-acetylglucosaminyltransferase, beta-d-mannoside beta-1,4-n-acetylglucosaminyltransferase, (gnt)-iii, 
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SYNONYM 
ORGANISM
UNIPROT
COMMENTARY 
LITERATURE
acetylglucosaminyltransferase, uridine diphosphoacetylglucosamine-glycopeptide beta4-, III
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beta-1,4-mannosyl-glycoprotein beta-1,4-N-acetylglucosaminyltransferase
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beta1,4-N-acetylglucosaminyltransferase III
EC 2.4.1.51
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formerly, part transferred
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GnT-III
GnTIII
Golgi beta-1,4-mannosyl-glycoprotein 4-beta-N-acetylglucosaminyltransferase III
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MGAT3
N-acetylglucosaminyltransferase III
N-glycosyl-oligosaccharide-glycoprotein N-acetylglucosaminyltransferase III
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uridine diphosphate (UDP)-N-acetylglucosamin/beta-D-mannoside beta-1,4-N-acetylglucosaminyltransferase III
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uridine diphosphoacetylglucosamine-glycopeptide beta4-acetylglucosaminyltransferase III
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beta1,4-N-acetylglucosaminyltransferase III
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GnT-III
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GnT-III
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N-acetylglucosaminyltransferase III
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N-acetylglucosaminyltransferase III
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REACTION
REACTION DIAGRAM
COMMENTARY
ORGANISM
UNIPROT
LITERATURE
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein] = UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein]
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein] = UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein]
R represents the remainder of the N-linked oligosaccharide in the glycoprotein acceptor. The action of this enzyme probably prevents further attachment of N-acetylglucosamine residues to the growing carbohydrate chain.
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UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein] = UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein]
sequential, random or partially random mechanism
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REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
hexosyl group transfer
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SYSTEMATIC NAME
IUBMB Comments
UDP-N-acetyl-alpha-D-glucosamine:beta-D-mannosyl-glycoprotein 4-beta-N-acetyl-D-glucosaminyltransferase (configuration-inverting)
The enzyme, found in vertebrates, participates in the processing of N-glycans in the Golgi apparatus. The residue added by the enzyme at position 4 of the beta-linked mannose of the trimannosyl core of N-glycans is known as a bisecting GlcNAc. Unlike GlcNAc residues added to other positions, it is not extended or modified. In addition, its presence prevents the action of other branching enzymes involved in the process such as GlcNAc-T IV (EC 2.4.1.145) and GlcNAc-T V (EC 2.4.1.155), and thus increased activity of GlcNAc-T III leads to a decrease in highly branched N-glycan structures.
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CAS REGISTRY NUMBER
COMMENTARY
83744-93-8
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SUBSTRATE
PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(beta-D-glucosyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP-D-glucose + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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GnT-III catalyzes the removal of the bisecting GlcNAc from the bisected oligosaccharide, producing the corresponding nonbisected sugar chain
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r
UDP-D-glucose + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(beta-D-glucosyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP-D-glucose + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(beta-D-glucosyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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?
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[Notch receptor]
UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[Notch receptor]
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?
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein]
UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein]
UDP-N-acetyl-D-galactosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-galactosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-N-acetyl-D-glucosaminyl-2-aminopyridine
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-N-acetyl-D-glucosaminyl-2-aminopyridine
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ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP-N-acetyl-D-glucosamine + beta-D-mannosyl-R
UDP + 4-(N-acetyl-beta-D-glucosaminyl)-beta-D-mannosyl-R
UDP-N-acetyl-D-glucosamine + E-cadherin
UDP + E-cadherin with bisecting N-acetyl-D-glucosamine
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recombinant enzyme expressed in murine lung melanoma cells
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?
UDP-N-acetyl-D-glucosamine + gamma-glutamyltranspeptidase
UDP + gamma-glutamyltranspeptidase with bisecting N-acetyl-D-glucosamine
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?
UDP-N-acetyl-D-glucosamine + GlcNAc-beta-1,2-Man-alpha-1,6-(GlcNAc-beta-1,2-Man-alpha-1,3)-Man-beta-1,4-GlcNAc-beta-1,4-(Fuc-alpha-1,6)-GlcNAc-Asn
UDP + GlcNAc-beta-1,2-Man-alpha-1,6-(GlcNAc-beta-1,2-Man-alpha-1,3)(GlcNAc-beta-1,4)-Man-beta-1,4-GlcNAc-beta-1,4-(Fuc-alpha-1,6)-GlcNAc-Asn
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incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine, both terminal beta-1,2-linked N-acetylglucosamine residues required for maximum activity, removal of one or both of them reduces activity by 85 or 93%, respectively
ir
UDP-N-acetyl-D-glucosamine + GlcNAc-beta-1,2-Man-alpha-1,6-(GlcNAc-beta-1,2-Man-alpha-1,3)-Man-beta-1,4-GlcNAc-beta-1,4-GlcNAc-2-aminopyridine
UDP + GlcNAc-beta-1,2-Man-alpha-1,6-(GlcNAc-beta-1,2-Man-alpha-1,3)(GlcNAc-beta-1,4)-Man-beta-1,4-GlcNAc-beta-1,4-GlcNAc-2-aminopyridine
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?
UDP-N-acetyl-D-glucosamine + GlcNAcbeta(1->2)Manalpha(1->6)(GlcNAcbeta(1->2)Manbeta(1->3)Manbeta(1->4)GlcNAcbeta(1->4)GlcNAc-NH(CH2)4NH(2-pyridyl)
?
UDP-N-acetyl-D-glucosamine + GnGnbi-PA
UDP + 4-(N-acetyl-beta-D-glucosaminyl)-GnGnbi-PA
the bi-branched N-glycan carrying a pyridylamino (PA) group at the reducing terminus (GnGnbi-PA) serves as a typical acceptor substrate and UDP-GlcNAc as a donor substrate
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?
UDP-N-acetyl-D-glucosamine + transferrin
UDP + transferrin with bisecting N-acetyl-D-glucosamine
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?
UDP-D-glucose + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(beta-D-glucosyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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?
UDP-D-glucose + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(beta-D-glucosyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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pyridylaminated biantennary sugar chain
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?
UDP-D-glucose + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(beta-D-glucosyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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0.2% activity compared to donor substrate UDP-N-acetyl-D-glucosamine
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?
UDP-D-glucose + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(beta-D-glucosyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
0.2% activity compared to donor substrate UDP-N-acetyl-D-glucosamine
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?
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein]
UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein]
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?
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein]
UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein]
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?
UDP-N-acetyl-D-galactosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-galactosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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pyridylaminated biantennary sugar chain
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?
UDP-N-acetyl-D-galactosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-galactosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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0.1% activity compared to donor substrate UDP-N-acetyl-D-glucosamine
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?
UDP-N-acetyl-D-galactosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-galactosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
0.1% activity compared to donor substrate UDP-N-acetyl-D-glucosamine
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?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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beta1,4-galactosylation of N-acetylglucosaminyl-1,2-alpha-mannosyl-1,3-beta-mannosyl moiety prevents transferase III action
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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R represents the remainder of the N-oligosaccharide core, (+/-)-fucose, favourite substrate
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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R represents the remainder of the N-oligosaccharide core (+/-fucose), essential for biosynthesis of complex N-linked oligosaccharides
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?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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-
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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substrate specificity
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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substrate specificity
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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beta1,2-GlcNAc linked to alpha1,3-Man is required for activity, beta1,2-GlcNAc linked to alpha1,6-Man is not required
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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any agalacto form of the bi-, tri- and tetraantennary sugar chains is capable of serving as ana cceptor substrate
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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R represents the remainder of the N-oligosaccharide core (+/-fucose), essential for biosynthesis of complex N-linked oligosaccharides
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-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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-
-
-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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-
-
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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-
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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-
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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-
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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-
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
-
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
substrate specificity
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
substrate specificity
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
pyridylaminated biantennary sugar chain
-
-
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
structural requirements, stereochemistry
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
beta1,2-GlcNAc linked to alpha1,3-Man is required for activity, beta1,2-GlcNAc linked to alpha1,6-Man is not required
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
any agalacto form of the bi-, tri- and tetraantennary sugar chains is capable of serving as ana cceptor substrate
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
beta1,4-galactosylation of N-acetylglucosaminyl-1,2-alpha-mannosyl-1,3-beta-mannosyl moiety prevents transferase III action
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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beta1,4-galactosylation of N-acetylglucosaminyl-1,2-alpha-mannosyl-1,3-beta-mannosyl moiety prevents transferase III action
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
R represents the remainder of the N-oligosaccharide core, (+/-)-fucose, favourite substrate
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
R represents the remainder of the N-oligosaccharide core, (+/-)-fucose, favourite substrate
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
R represents the remainder of the N-oligosaccharide core, (+/-)-fucose, favourite substrate
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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key regulatory role in N-glycan biosynthesis, responsible for cancer-associated alterations
-
-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
important role in carcinogenesis and cancer metastasis
-
-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
key enzyme in the biosynthesis of N-glycans since it inhibits the other involved glycosyltransferases by adding the GlcNAc-residue in an beta-1,4- linkage
-
-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
R represents the remainder of the N-oligosaccharide core (+/-fucose), essential for biosynthesis of complex N-linked oligosaccharides
-
-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
numerous target proteins, multifacial glycosyltransferase
-
-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
-
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
R represents the remainder of the N-oligosaccharide core, (+/-)-fucose, favourite substrate
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
key enzyme in the biosynthesis of N-glycans since it inhibits the other involved glycosyltransferases by adding the GlcNAc-residue in an beta-1,4- linkage
-
-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
enzyme plays an important role in the progression of preneoplastic foci to primary hepatoma
-
-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
R represents the remainder of the N-oligosaccharide core (+/-fucose), essential for biosynthesis of complex N-linked oligosaccharides
-
-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
-
-
-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
substrate specificity
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
substrate specificity
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
pyridylaminated biantennary sugar chain
-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
pyridylaminated biantennary sugar chain
-
-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
structural requirements, stereochemistry
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
beta1,2-GlcNAc linked to alpha1,3-Man is required for activity, beta1,2-GlcNAc linked to alpha1,6-Man is not required
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
any agalacto form of the bi-, tri- and tetraantennary sugar chains is capable of serving as ana cceptor substrate
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
beta1,4-galactosylation of N-acetylglucosaminyl-1,2-alpha-mannosyl-1,3-beta-mannosyl moiety prevents transferase III action
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
beta1,4-galactosylation of N-acetylglucosaminyl-1,2-alpha-mannosyl-1,3-beta-mannosyl moiety prevents transferase III action
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
R represents the remainder of the N-oligosaccharide core, (+/-)-fucose, favourite substrate
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
R represents the remainder of the N-oligosaccharide core, (+/-)-fucose, favourite substrate
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
R represents the remainder of the N-oligosaccharide core, (+/-)-fucose, favourite substrate
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
ir
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
absolute requirement for the conserved residues Asp321 and Asp323 as part of a D-X-D motif
incorporates a N-acetylglucosamine residue in beta-1,4-linkage to beta-linked mannosyl, i.e. bisecting N-acetylglucosamine
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
key regulatory role in N-glycan biosynthesis, responsible for cancer-associated alterations
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-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
important role in carcinogenesis and cancer metastasis
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-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
key enzyme in the biosynthesis of N-glycans since it inhibits the other involved glycosyltransferases by adding the GlcNAc-residue in an beta-1,4- linkage
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-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
key enzyme in the biosynthesis of N-glycans since it inhibits the other involved glycosyltransferases by adding the GlcNAc-residue in an beta-1,4- linkage
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-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
-
R represents the remainder of the N-oligosaccharide core (+/-fucose), essential for biosynthesis of complex N-linked oligosaccharides
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-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
R represents the remainder of the N-oligosaccharide core (+/-fucose), essential for biosynthesis of complex N-linked oligosaccharides
-
-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
R represents the remainder of the N-oligosaccharide core (+/-fucose), essential for biosynthesis of complex N-linked oligosaccharides
-
-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
numerous target proteins, multifacial glycosyltransferase
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-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
numerous target proteins, multifacial glycosyltransferase
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-
?
UDP-N-acetyl-D-glucosamine + beta-D-mannosyl-R
UDP + 4-(N-acetyl-beta-D-glucosaminyl)-beta-D-mannosyl-R
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-
?
UDP-N-acetyl-D-glucosamine + beta-D-mannosyl-R
UDP + 4-(N-acetyl-beta-D-glucosaminyl)-beta-D-mannosyl-R
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-
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-
?
UDP-N-acetyl-D-glucosamine + beta-D-mannosyl-R
UDP + 4-(N-acetyl-beta-D-glucosaminyl)-beta-D-mannosyl-R
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GnT-III catalyzes the formation of a bisecting GlcNAc structure in N-glycans, resulting in the suppression of metastasis. The priority of GnT-III for the modification of the integrin alpha3 subunit may be an explanation for why GnT-III inhibits GnT-V-induced cell migration. TGnT-III and GnT-V can competitively modify the same target glycoprotein and furthermore positively or negatively regulate its biological functions
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-
?
UDP-N-acetyl-D-glucosamine + GlcNAcbeta(1->2)Manalpha(1->6)(GlcNAcbeta(1->2)Manbeta(1->3)Manbeta(1->4)GlcNAcbeta(1->4)GlcNAc-NH(CH2)4NH(2-pyridyl)
?
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-
-
-
?
UDP-N-acetyl-D-glucosamine + GlcNAcbeta(1->2)Manalpha(1->6)(GlcNAcbeta(1->2)Manbeta(1->3)Manbeta(1->4)GlcNAcbeta(1->4)GlcNAc-NH(CH2)4NH(2-pyridyl)
?
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-
-
-
?
UDP-N-acetyl-D-glucosamine + pyridylaminated acceptor substrate
?
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-
-
-
?
additional information
?
-
-
the biantennary structure of a core mannose is twisted in presence of bisecting GlcNAc, probably responsible for the substrate inaccessibility to N-acetylglucosamine transferase V to form the beta-1,6 structure
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-
?
additional information
?
-
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biosynthetic pathway of the core structures of Asn-linked sugar chains, overview
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?
additional information
?
-
-
key enzyme that inhibits the extension of N-glycans by introducing a bisecting N-acetylglucosamine residue, modification of N-glycans by the enzyme affects a number of intracellular signalling pathways
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-
?
additional information
?
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-
key enzyme that inhibits the extension of N-glycans by introducing a bisecting N-acetylglucosamine residue, modification of N-glycans by the enzyme affects a number of intracellular signalling pathways
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-
?
additional information
?
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-
N-acetylglucosaminyltransferase III expression is regulated by cell-cell adhesion via the E-cadherin-catenin-actin complex
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?
additional information
?
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GnT-III selectively modifies N-glycosylation site-4 on the integrin alpha5 subunit (S-3,4,5), which down-regulates its biological functions
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?
additional information
?
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N-glycosylation of laminin-332, GnT-III down-regulates activities of laminin-332
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?
additional information
?
-
-
the enzyme catalyzes the transfer of N-acetylglucosamine in a beta1,4 linkage to mannose on N-glycans forming a bisecting N-acetylglucosamine structure
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?
additional information
?
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the enzyme introduces a N-acetylglucosamine in a beta1,4-linkage to the mannose residue located at the base of the trimannosyl core (bisecting N-acetylglucosamine) in N-glycans
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additional information
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N-acetylglucosaminyltransferase III is a glycosyltransferase which produces bisected N-glycans by transferring GlcNAc to the 4-position of core mannose
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additional information
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the MCAM glycoprotein, which is a biomarker of cutaneous melanoma, as a potential target for overexpressed glycosyltransferases
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additional information
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the MCAM glycoprotein, which is a biomarker of cutaneous melanoma, as a potential target for overexpressed glycosyltransferases
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additional information
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in brain cells with down-regulated enzyme activity, normal prion proteins PrPC get conversed to pathogenic prion protein PrPSc due to a lower amount of glycans with bisecting N-acetylglucosamine residues
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additional information
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cell-cell interaction-dependent regulation of N-acetylglucosaminyltransferase III and the bisected N-glycans in GE11 epithelial cells
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additional information
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ADP-, CDP-, GDP-, and TDP-glucose are no donor substrates
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additional information
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specificity towards the sugar moiety of the donor substrate appears to be critically determined during the catalytic process but not during binding to the enzyme in ground state
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additional information
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specificity towards the sugar moiety of the donor substrate appears to be critically determined during the catalytic process but not during binding to the enzyme in ground state
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additional information
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biosynthetic pathway of the core structures of Asn-linked sugar chains, overview
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additional information
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biosynthetic pathway of the core structures of Asn-linked sugar chains, overview
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additional information
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beta1,4-N-acetylglucosaminyltransferase III potentiates beta1 integrin-mediated neuritogenesis induced by serum deprivation in Neuro2a cells
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additional information
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expression of GnTIII leads to a high proportion of N-glycans of the complex type, modified with the bisecting GlcNAc (median value 37%, q1, 33%, q3, 39%) and a strong reduction of paucimannosidic type N-glycans (median value 2%, q1, 1%, q3.2%) that are abundant in secreted proteins of tobacco BY-2 cells. Native GnTIII expression, the coexpression of Arabidopsis thaliana ManII leads to an increase in the proportion of complex bisected N-glycan structures, whereas the expression of native human ManII does not significantly increase these structures. In the case of chimeric GnTIIIA.th. and chimeric ManIIA.th. expression, reduction in hybrid bisected structures. No viable cultures expressing GnTIIIA.th. and A. thaliana ManII. Plant-specific core fucosylation and xylosylation can be greatly reduced, with up to 59% of N-glycans on endogenous secreted protein lacking the plant-specific modifications
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NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[Notch receptor]
UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[Notch receptor]
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-
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?
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein]
UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein]
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP-N-acetyl-D-glucosamine + beta-D-mannosyl-R
UDP + 4-(N-acetyl-beta-D-glucosaminyl)-beta-D-mannosyl-R
UDP-N-acetyl-D-glucosamine + E-cadherin
UDP + E-cadherin with bisecting N-acetyl-D-glucosamine
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recombinant enzyme expressed in murine lung melanoma cells
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?
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein]
UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein]
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?
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein]
UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein]
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?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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R represents the remainder of the N-oligosaccharide core (+/-fucose), essential for biosynthesis of complex N-linked oligosaccharides
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?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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R represents the remainder of the N-oligosaccharide core (+/-fucose), essential for biosynthesis of complex N-linked oligosaccharides
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?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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key regulatory role in N-glycan biosynthesis, responsible for cancer-associated alterations
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?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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important role in carcinogenesis and cancer metastasis
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?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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key enzyme in the biosynthesis of N-glycans since it inhibits the other involved glycosyltransferases by adding the GlcNAc-residue in an beta-1,4- linkage
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?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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R represents the remainder of the N-oligosaccharide core (+/-fucose), essential for biosynthesis of complex N-linked oligosaccharides
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?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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numerous target proteins, multifacial glycosyltransferase
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?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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key enzyme in the biosynthesis of N-glycans since it inhibits the other involved glycosyltransferases by adding the GlcNAc-residue in an beta-1,4- linkage
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-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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enzyme plays an important role in the progression of preneoplastic foci to primary hepatoma
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-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
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R represents the remainder of the N-oligosaccharide core (+/-fucose), essential for biosynthesis of complex N-linked oligosaccharides
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-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
key regulatory role in N-glycan biosynthesis, responsible for cancer-associated alterations
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-
?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
important role in carcinogenesis and cancer metastasis
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?
UDP-N-acetyl-D-glucosamine + (N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3)-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-beta-D-mannosyl-1,4-N-acetyl-beta-D-glucosaminyl-R
UDP + N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,3-(N-acetyl-beta-D-glucosaminyl-1,2-alpha-D-mannosyl-1,6)-(N-acetyl-beta-D-glucosaminyl-1,4)-beta-D-mannosyl-1,4-N-a