IUBMB Enzyme Nomenclature


Accepted name: α-1,3-glucan synthase

Reaction: UDP-glucose + [α-D-glucosyl-(1→3)]n = UDP + [α-D-glucosyl-(1→3)]n+1

Other name(s): uridine diphosphoglucose-1,3-α-glucan glucosyltransferase; 1,3-α-D-glucan synthase

Systematic name: UDP-glucose:α-D-(1-3)-glucan 3-α-D-glucosyltransferase

Comments: A glucan primer is needed to begin the reaction, which brings about elongation of the glucan chains.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 113478-38-9


1. Andoh, M., Yamashita, Y., Shigeoka, T., Hanada, N. and Takehara, T. [Extension of the length of glucan chain by 1,3-α-D-glucansynthase from Streptococcus mutans serotype.] Koku Eisei Gakkai Zasshi 37 (1987) 516-517 (in Japanese).

[EC created 1990]

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