IUBMB Enzyme Nomenclature


Accepted name: β-1,2-mannobiose phosphorylase

Reaction: β-D-mannopyranosyl-(1→2)-D-mannopyranose + phosphate = D-mannopyranose + α-D-mannose 1-phosphate

Systematic name: β-D-mannopyranosyl-(1→2)-D-mannopyranose:phosphate α-D-mannosyltransferase

Comments: The enzyme, originally characterized from the thermophilic anaerobic bacterium Thermoanaerobacter sp. X514, catalyses a reversible reaction. cf. EC, 1,2-β-oligomannan phosphorylase.

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


1. Chiku, K., Nihira, T., Suzuki, E., Nishimoto, M., Kitaoka, M., Ohtsubo, K. and Nakai, H. Discovery of two β-1,2-mannoside phosphorylases showing different chain-length specificities from Thermoanaerobacter sp. X-514. PLoS One 9 (2014) e114882. [PMID: 25500577]

2. Tsuda, T., Nihira, T., Chiku, K., Suzuki, E., Arakawa, T., Nishimoto, M., Kitaoka, M., Nakai, H. and Fushinobu, S. Characterization and crystal structure determination of β-1,2-mannobiose phosphorylase from Listeria innocua. FEBS Lett. 589 (2015) 3816-3821. [PMID: 26632508]

[EC created 2016]

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