The Enzyme Database

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Accepted name: isomaltulose synthase
Reaction: sucrose = 6-O-α-D-glucopyranosyl-D-fructofuranose
Other name(s): isomaltulose synthetase; sucrose α-glucosyltransferase; trehalulose synthase
Systematic name: sucrose glucosylmutase
Comments: The enzyme simultaneously produces isomaltulose (6-O-α-D-glucopyranosyl-D-fructose) and smaller amounts of trehalulose (1-O-α-D-glucopyranosyl-β-D-fructose) from sucrose.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 159940-49-5
1.  Cheetham, P.S.J. The extraction and mechanism of a novel isomaltulose-synthesizing enzyme from Erwinia rhapontici. Biochem. J. 220 (1984) 213–220. [PMID: 6743261]
2.  Cheetham, P.S.J., Imber, C.E. and Isherwood, J. The formation of isomaltulose by immobilized Erwinia rhapontici. Nature 299 (1982) 628–631.
[EC created 1989 (EC created 1984, incorporated 1992)]

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