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EC 2.4.1.225 Details
EC number
2.4.1.225
Accepted name
N-acetylglucosaminyl-proteoglycan 4-β-glucuronosyltransferase
Reaction
UDP-α-D-glucuronate + N-acetyl-α-D-glucosaminyl-(1→4)-β-D-glucuronosyl-proteoglycan = UDP + β-D-glucuronosyl-(1→4)-N-acetyl-α-D-glucosaminyl-(1→4)-β-D-glucuronosyl-proteoglycan
Other name(s)
N-acetylglucosaminylproteoglycan β-1,4-glucuronyltransferase, heparan glucuronyltransferase II
Systematic name
UDP-α-D-glucuronate:N-acetyl-α-D-glucosaminyl-(1→4)-β-D-glucuronosyl-proteoglycan 4-β-glucuronosyltransferase
CAS registry number
145539-84-0
Comment
Involved in the biosynthesis of heparin and heparan sulfate. Some forms of the human enzyme (particularly the enzyme complex encoded by the EXT1 and EXT2 genes) act as bifunctional glycosyltransferases, which also have the glucuronosyl-N-acetylglucosaminyl-proteoglycan 4-α-N-acetylglucosaminyltransferase (EC 2.4.1.224) activity required for the synthesis of the heparan sulfate disaccharide repeats.
History
created 2002
EC Tree
2.4.1.3 created 1961, deleted 1972
2.4.1.6 created 1961, deleted 1972
2.4.1.42 created 1972, deleted 1984
2.4.1.51 created 1972, deleted 1984
2.4.1.55 created 1972, deleted 1982
2.4.1.59 created 1972, deleted 1984
2.4.1.61 created 1972, deleted 1984
2.4.1.72 created 1972, deleted 1976
2.4.1.75 created 1976, deleted 2005
2.4.1.76 created 1976, deleted 1984
2.4.1.77 created 1976, deleted 1984
2.4.1.84 created 1976, deleted 1984
2.4.1.89 created 1976, deleted 1984
2.4.1.93 created 1976, deleted 2004
2.4.1.98 created 1980, deleted 1984
2.4.1.107 created 1983, deleted 1984
2.4.1.108 created 1983, deleted 1984
2.4.1.124 created 1984, deleted 2002
2.4.1.151 created 1984, deleted 2002
2.4.1.169 created 1989, deleted 2003
2.4.1.200 created 1992, deleted 2004
2.4.1.204 created 1992, deleted 2003
2.4.1.233 created 2004, deleted 2005