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Information on EC 2.4.1.226 - N-acetylgalactosaminyl-proteoglycan 3-beta-glucuronosyltransferase

for references in articles please use BRENDA:EC2.4.1.226
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IUBMB Comments
Involved in the biosynthesis of chondroitin and dermatan sulfate. The human chondroitin synthetase is a bifunctional glycosyltransferase, which has the 3-beta-glucuronosyltransferase and 4-beta-N-acetylgalactosaminyltransferase (EC 2.4.1.175) activities required for the synthesis of the chondroitin sulfate disaccharide repeats. Similar chondroitin synthase 'co-polymerases' can be found in Pasteurella multocida and Escherichia coli. There is also another human protein with apparently only the 3-beta-glucuronosyltransferase activity.
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Word Map
The enzyme appears in viruses and cellular organisms
Reaction Schemes
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[protein]-3-O-([beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)]n-beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl)-L-serine
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[protein]-3-O-(beta-D-GlcA-(1->3)-[beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)]n-beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl)-L-serine
Synonyms
ChGn-1, chondroitin beta-glucuronyltransferase, chondroitin glucuronyltransaferase II, chondroitin glucuronyltransferase, chondroitin glucuronyltransferase II, chondroitin sulfate beta-1,4-N-acetylgalactosaminyltransferase-1, chondroitin sulfate glucoronyltransferase, chondroitin sulfate glucuronyltransferase, chondroitin sulfate glucuronyltransferase/chondroitin synthase-3, chondroitin sulfate N-acetylgalactosaminyltransferase-1, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
UDP-alpha-D-glucuronate + [protein]-3-O-(beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl)-L-serine = UDP + [protein]-3-O-(beta-D-GlcA-(1->3)-beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl)-L-serine
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UDP-alpha-D-glucuronate + [protein]-3-O-([beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)]n-beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl)-L-serine = UDP + [protein]-3-O-(beta-D-GlcA-(1->3)-[beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)]n-beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl)-L-serine
show the reaction diagram
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