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IUBMB Comments In association with EC 2.4.2.39 (xyloglucan 6-xylosyltransferase), this enzyme brings about the synthesis of xyloglucan; concurrent transfers of glucose and xylose are essential for this synthesis. Not identical with EC 2.4.1.12 cellulose synthase (UDP-forming).
Synonyms
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glucosyltransferase, uridine diphosphoglucose-xyloglucan 4beta-
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xyloglucan 4beta-D-glucosyltransferase
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xyloglucan glucosyltransferase
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Transfers a beta-D-glucosyl residue from UDP-glucose on to a glucose residue in xyloglucan, forming a beta-(1->4)-D-glucosyl-D-glucose linkage
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hexosyl group transfer
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MetaCyc
xyloglucan biosynthesis
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UDP-glucose:xyloglucan 4-beta-D-glucosyltransferase
In association with EC 2.4.2.39 (xyloglucan 6-xylosyltransferase), this enzyme brings about the synthesis of xyloglucan; concurrent transfers of glucose and xylose are essential for this synthesis. Not identical with EC 2.4.1.12 cellulose synthase (UDP-forming).
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UDP-D-glucose + (glucosyl)xyloglucan
UDP + (glucosyl-glucosyl)xyloglucan
UDP-D-glucose + xyloglucan
UDP + glucosylxyloglucan
UDP-D-glucose + (glucosyl)xyloglucan
UDP + (glucosyl-glucosyl)xyloglucan
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Substrates: -
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UDP-D-glucose + (glucosyl)xyloglucan
UDP + (glucosyl-glucosyl)xyloglucan
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Substrates: no acceptor: cello-oligosaccharides and fragment oligosaccharides from endoglucanase digest
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UDP-D-glucose + (glucosyl)xyloglucan
UDP + (glucosyl-glucosyl)xyloglucan
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Substrates: no acceptor: beta-1,4-glucan
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UDP-D-glucose + (glucosyl)xyloglucan
UDP + (glucosyl-glucosyl)xyloglucan
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Substrates: transfers a beta-D-glucosyl residue from UDPglucose on to a glucose residue in xyloglucan, other glucosyl-acceptors are beta-1,3-glucan and xylan
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UDP-D-glucose + (glucosyl)xyloglucan
UDP + (glucosyl-glucosyl)xyloglucan
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Substrates: -
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UDP-D-glucose + (glucosyl)xyloglucan
UDP + (glucosyl-glucosyl)xyloglucan
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Substrates: standard oligosaccharides for enzyme assay
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UDP-D-glucose + xyloglucan
UDP + glucosylxyloglucan
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Substrates: involved in biosynthesis of xyloglucan in higher plants
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UDP-D-glucose + xyloglucan
UDP + glucosylxyloglucan
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Substrates: responsible for the formation of the xyloglucan backbone
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UDP-D-glucose + xyloglucan
UDP + glucosylxyloglucan
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Substrates: responsible for the formation of the xyloglucan backbone
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UDP-D-glucose + xyloglucan
UDP + glucosylxyloglucan
UDP-D-glucose + xyloglucan
UDP + glucosylxyloglucan
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Substrates: involved in biosynthesis of xyloglucan in higher plants
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UDP-D-glucose + xyloglucan
UDP + glucosylxyloglucan
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Substrates: responsible for the formation of the xyloglucan backbone
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UDP-D-glucose + xyloglucan
UDP + glucosylxyloglucan
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Substrates: responsible for the formation of the xyloglucan backbone
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additional information
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no activation by Ca2+
Mg2+
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activation
Mg2+
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can replace Mn2+ to some extent
Mn2+
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activation
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UDP-xylose
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above 0.03 mM
additional information
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no inhibition by tunicamycin, ATP or GTP
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GTPglucose
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weak
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additional information
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fusicoccin, indole acetic acid and D2O activate in vivo, via proton extrusion, in the presence of O2 and sugar substrate, while mannitol, vanadate or nigrecin inhibit this activation, no direct activation in vitro
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UDP-xylose
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UDP-xylose
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activation, 0.01-0.03 mM
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tamarind
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soy bean
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pea, cv. Alaska
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pea, cv. Caprice
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elongation region
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Highest Expressing Human Cell Lines
Filter by:
Cell Line Links
Gene Links
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DTT, 1 mM, EDTA, 1 mM, sucrose, 0.4 M, bovine serum albumin, 0.1%, stabilize
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0°C, crude membrane-bound enzyme preparation, 1 day
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Hayashi, T.; Koyama, T.; Matsuda, K.
Formation of UDP-xylose and xyloglucan in soybean Golgi membranes
Plant Physiol.
87
341-345
1988
Glycine max
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Hayashi, T.; Matsuda, K.
Biosynthesis of xyloglucan in suspension-cultured soybean cells. Occurrence and some properties of xyloglucan 4-beta-D-glucosyltransferase and 6-alpha-D-xylosyltransferase
J. Biol. Chem.
256
11117-11122
1981
Glycine max
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White, A.R.; Xin, Y.; Pezeshk, V.
Xyloglucan glucosyltransferase in Golgi membranes from Pisum sativum (pea)
Biochem. J.
294
231-238
1993
Lathyrus oleraceus
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Hayashi, T.; Matsuda, K.
Biosynthesis of xyloglucan in suspension-cultured soybean cells. Evidence that the enzyme system of xyloglucan synthesis does not contain beta-1,4-glucan 4-beta-glucosyltransferase activity (EC 2.4.1.12)
Plant Cell Physiol.
22
1571-1584
1981
Glycine max
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Hayashi, T.; Nakajima, T.; Matsuda, K.
Biosynthesis of xyloglucan in suspension-cultured soybean cells. Processing of the oligosaccharide building blocks
Agric. Biol. Chem.
48
1023-1027
1984
Glycine max
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Gordon, R.; MacLachlan, G.
Incorporation of UDP-[C14]glucose into xyloglucan by pea membranes
Plant Physiol.
91
373-378
1989
Lathyrus oleraceus
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Ray, P.M.
Auxin and fusicoccin enhancement of beta-glucan synthase in peas
Plant Physiol.
78
466-472
1985
Lathyrus oleraceus
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Marry, M.; Cavalier, D.M.; Schnurr, J.K.; Netland, J.; Yang, Z.; Pezeshk, V.; York, W.S.; Pauly, M.; White, A.R.
Structural characterization of chemically and enzymatically derived standard oligosaccharides isolated from partially purified tamarind xyloglucan
Carbohydr. Polym.
51
347-356
2002
Tamarindus indica
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brenda
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