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EC 2.4.1.33 Details
EC number
2.4.1.33
Accepted name
mannuronan synthase
Reaction
GDP-α-D-mannuronate + [(1→4)-β-D-mannuronosyl]n = GDP + [(1→4)-β-D-mannuronosyl]n+1
Other name(s)
mannuronosyl transferase, alginate synthase (incorrect), alg8 (gene name), alg44 (gene name), GDP-D-mannuronate:alginate D-mannuronyltransferase
Systematic name
GDP-α-D-mannuronate:mannuronan D-mannuronatetransferase
CAS registry number
37257-31-1
Comment
The enzyme catalyses the polymerization of β-D-mannuronate residues into a mannuronan polymer, an intermediate in the biosynthesis of alginate. It is found in brown algae and in alginate-producing bacterial species from the Pseudomonas and Azotobacter genera.
History
created 1972, modified 2015
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