ENTRY       EC 2.4.1.21
NAME        Starch synthase
            ADPglucose--starch glucosyltransferase
CLASS       Transferases
            Glycosyltransferases
            Hexosyltransferases
SYSNAME     ADPglucose:1,4-alpha-D-glucan 4-alpha-D-glucosyltransferase
REACTION    ADPglucose + (1,4-alpha-D-Glucosyl)n = ADP +
            (1,4-alpha-D-Glucosyl)n+1
SUBSTRATE   ADPglucose
            (1,4-alpha-D-Glucosyl)n
PRODUCT     ADP
            (1,4-alpha-D-Glucosyl)n
COMMENT     The recommended name varies according to the source of the enzyme
            and the nature of its synthetic product, e.g. starch synthase,
            bacterial glycogen synthase. Similar to EC 2.4.1.11 but the
            preferred or mandatory nucleoside diphosphate suger substrate is
            ADPglucose. The entry covers starch and glycogen synthases
            utilizing ADPglucose.
PATHWAY     PATH: MAP00500  Starch and sucrose metabolism
GENES       ECO: b3429(glgA)
            HIN: HI1360(glgA)
            BSU: glgA
            SYN: sll0945(glgA)
DBLINKS     University of Geneva ENZYME DATA BANK: 2.4.1.21
            WIT (What Is There) Metabolic Reconstruction: 2.4.1.21
///