Any feedback?
Please rate this page
(enzyme.php)
(0/150)

BRENDA support

BRENDA Home
show all | hide all No of entries

Information on EC 2.7.8.17 - UDP-N-acetylglucosamine-lysosomal-enzyme N-acetylglucosaminephosphotransferase

for references in articles please use BRENDA:EC2.7.8.17
Please wait a moment until all data is loaded. This message will disappear when all data is loaded.
EC Tree
IUBMB Comments
Some other glycoproteins with high-mannose can act as acceptors, but much more slowly than lysosomal enzymes.
Specify your search results
Select one or more organisms in this record: ?
This record set is specific for:
UNIPROT: Q9UJJ9
Show additional data
Do not include text mining results
Include (text mining) results
Include results (AMENDA + additional results, but less precise)
Word Map
The expected taxonomic range for this enzyme is: Eukaryota, Bacteria
Synonyms
gnptab, gnptg, glcnac-1-phosphotransferase, n-acetylglucosaminylphosphotransferase, udp-glcnac:lysosomal enzyme n-acetylglucosamine-1-phosphotransferase, udp-n-acetylglucosamine:lysosomal enzyme n-acetylglucosamine-1-phosphotransferase, udp-glcnac:lysosomal enzyme glcnac-1-phosphotransferase, udp-n-acetylglucosamine:glycoprotein n-acetylglucosamine-1-phosphotransferase, n-acetylglucosaminyl phosphotransferase, udp-glcnac:glycoprotein n-acetylglucosamine-1-phosphotransferase, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
GlcNAc-1-phosphotransferase
-
acetylglucosamine-1-phosphotransferase, uridine diphosphoacetylglucosamine-glycoprotein
-
-
-
-
acetylglucosamine-1-phosphotransferase, uridine diphosphoacetylglucosamine-lysosomal enzyme precursor
-
-
-
-
lysosomal enzyme precursor acetylglucosamine-1-phosphotransferase
-
-
-
-
N-acetylglucosaminyl phosphotransferase
-
-
-
-
N-acetylglucosaminylphosphotransferase
-
-
-
-
UDP-acetylglucosamine:lysosomal enzyme N-acetylglucosamine-1-phosphotransferase
-
-
-
-
UDP-GlcNAc:glycoprotein N-acetylglucosamine-1-phosphotransferase
-
-
-
-
UDP-GlcNAc:lysosomal enzyme N-acetylglucosamine-1-phosphotransferase
-
-
-
-
UDP-N-acetylglucosamine:glycoprotein N-acetylglucosamine-1-phosphotransferase
-
-
-
-
UDP-N-acetylglucosamine:glycoprotein N-acetylglucosaminyl-1-phosphotransferase
-
-
-
-
UDP-N-acetylglucosamine:lysosomal enzyme N-acetylglucosamine-1-phosphotransferase
-
-
-
-
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
substituted phospho group transfer
-
-
-
-
SYSTEMATIC NAME
IUBMB Comments
UDP-N-acetyl-D-glucosamine:lysosomal-enzyme N-acetylglucosaminephosphotransferase
Some other glycoproteins with high-mannose can act as acceptors, but much more slowly than lysosomal enzymes.
CAS REGISTRY NUMBER
COMMENTARY hide
84012-69-1
-
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
gamma subunit
UniProt
Manually annotated by BRENDA team
LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY hide
GeneOntology No.
LITERATURE
SOURCE
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
malfunction
the lysosomal storage disorder ML III gamma is caused by defects in the gamma subunit of UDP-GlcNAc:lysosomal enzyme N-acetylglucosamine-1-phosphotransferase. In patients with this disorder, most of the newly synthesized lysosomal enzymes are secreted rather than being sorted to lysosomes, resulting in increased levels of these enzymes in the plasma. Several missense mutations in GNPTG, the gene encoding the gamma subunit, are reported in mucolipidosis III gamma patients. gamma-Subunit deficient HeLa cells have greatly reduced levels of many lysosomal acid hydrolases compared with the parental HeLa cells and display a lysosomal storage phenotype
physiological function
the enzyme tags lysosomal enzymes with the mannose 6-phosphate lysosomal targeting signal. The gamma-subunit is required for efficient phosphorylation of a subset of the lysosomal enzymes
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
GNPTG_HUMAN
305
0
33974
Swiss-Prot
-
POSTTRANSLATIONAL MODIFICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
glycoprotein
the gamma subunit of GlcNAc-1-phosphotransferase is a soluble glycoprotein
PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
C142Y
naturally occuring mutation of the gamma-subunit that causes misfolding of the gamma-subunit, the misfolded protein is retained in the endoplasmic reticulum, where it forms aggregates, and fails to rescue the lysososmal targeting of lysosomal acid glycosidases
G106S
naturally occuring mutation of the gamma-subunit that causes misfolding of the gamma-subunit, the misfolded protein is retained in the endoplasmic reticulum, where it forms aggregates, and fails to rescue the lysososmal targeting of lysosomal acid glycosidases
G126S
naturally occuring mutation of the gamma-subunit that causes misfolding of the gamma-subunit, the misfolded protein is retained in the endoplasmic reticulum, where it forms aggregates, and fails to rescue the lysososmal targeting of lysosomal acid glycosidases
T286M
naturally occuring mutation of the gamma-subunit that does not alter the gamma-subunit function, the mutant variant enters the Golgi like the wild-type enzyme
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
gene GNPTG encoding the gamma-subunit of the enzyme, transient expression of wild-type and mutant gamma-subunits in HeLa cells
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
van Meel, E.; Kornfeld, S.
Mucolipidosis III GNPTG missense mutations cause misfolding of the gamma subunit of GlcNAc-1-phosphotransferase
Hum. Mutat.
37
623-626
2016
Homo sapiens (Q9UJJ9), Homo sapiens
Manually annotated by BRENDA team