IUBMB Enzyme Nomenclature


Accepted name: 3-O-β-D-glucopyranosyl-β-D-glucuronide phosphorylase

Reaction: a 3-O-β-D-glucosyl-β-D-glucuronoside + phosphate = a β-D-glucuronoside + α-D-glucopyranose 1-phosphate

Other name(s): PBOR_13355 (locus name)

Systematic name: 3-O-β-D-glucopyranosyl-β-D-glucuronide:phosphate α-D-glucosyltransferase

Comments: The enzyme, characterized from the bacterium Paenibacillus borealis, catalyses a reversible reaction, transferring a glucosyl residue attached by a β(1,3) linkage to a D-glucuronate residue (either free or as a part of a β-D-glucuronide) to a free phosphate, generating α-D-glucopyranose 1-phosphate

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number:


1. Isono, N., Mizutani, E., Hayashida, H., Katsuzaki, H. and Saburi, W. Functional characterization of a novel GH94 glycoside phosphorylase, 3-O-β-D-glucopyranosyl β-D-glucuronide phosphorylase, and implication of the metabolic pathway of acidic carbohydrates in Paenibacillus borealis. Biochem. Biophys. Res. Commun. 625 (2022) 60-65. [PMID: 35947916]

[EC created 2022]

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