IUBMB Enzyme Nomenclature


Accepted name: glucosylglycerol 3-phosphatase

Reaction: 2-O-(α-D-glucosyl)-sn-glycerol-3-phosphate + H2O = 2-O-(α-D-glucopyranosyl)glycerol + phosphate

Other name(s): salt tolerance protein A; StpA; 2-(β-D-glucosyl)-sn-glycerol-3-phosphate phosphohydrolase (incorrect)

Systematic name: 2-O-(α-D-glucopyranosyl)-sn-glycerol-3-phosphate phosphohydrolase

Comments: Acts with EC (glucosylglycerol-phosphate synthase) to form glucosylglycerol, an osmolyte that endows cyanobacteria with resistance to salt.

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 161515-14-6


1. Hagemann, M. and Erdmann, N. Activation and pathway of glucosylglycerol biosynthesis in the cyanobacterium Synechocystis sp. PCC 6803. Microbiology 140 (1994) 1427-1431.

2. Hagemann, M., Richter, S., Zuther, E. and Schoor, A. Characterization of a glucosylglycerol-phosphate-accumulating salt-sensitive mutant of the cyanobacterium Synechocystis sp. strain PCC 6803. Arch. Microbiol. 166 (1996) 83-91. [PMID: 8772170]

3. Hagemann, M., Schoor, A., Jeanjean, R., Zuther, E. and Joset, F. The gene stpA from Synechocystis sp. strain PCC 6803 encodes for the glucosylglycerol-phosphate phosphatase involved in cyanobacterial salt adaptation. J. Bacteriol. 179 (1997) 1727-1733. [PMID: 9045835]

[EC created 2001, modified 2015]

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