The Enzyme Database

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Accepted name: β-1,2-glucosyltransferase
Reaction: [(1→2)-β-D-glucosyl]n + a D-glucoside = [(1→2)-β-D-glucosyl]n-1 + a β-D-glucosyl-(1→2)-D-glucoside
Systematic name: 1,2-β-D-glucan:D-glucoside 2-β-D-glucosyltransferase (configuration-retaining)
Comments: The enzyme, characterized from the bacterium Ignavibacterium album, transfers a glucosyl residue from the non-reducing end of a 1,2-β-D-glucan to a glucose residue of an acceptor molecule, forming a β(1,2) linkage. The donor molecule can be as small as sophorose (which contains two glucosyl residues). The enzyme has a very broad specificity for the acceptor, and can act on various aryl- and alkyl-glucosides. In addition, the accepting glucose unit can be in either α or β configuration.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Kobayashi, K., Shimizu, H., Tanaka, N., Kuramochi, K., Nakai, H., Nakajima, M. and Taguchi, H. Characterization and structural analyses of a novel glycosyltransferase acting on the β-1,2-glucosidic linkages. J. Biol. Chem. 298:101606 (2022). [DOI] [PMID: 35065074]
[EC created 2022]

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