IUBMB Enzyme Nomenclature


Accepted name: glucoside 3-dehydrogenase (acceptor)

Reaction: sucrose + acceptor = 3-dehydro-α-D-glucosyl-β-D-fructofuranoside + reduced acceptor

Other name(s): D-glucoside 3-dehydrogenase (ambiguous); D-aldohexopyranoside dehydrogenase (ambiguous); D-aldohexoside:(acceptor) 3-oxidoreductase; thuA (gene name); thuB (gene name); glucoside 3-dehydrogenase

Systematic name: D-aldohexoside:acceptor 3-oxidoreductase

Comments: The enzymes from members of the Rhizobiaceae family (such as Agrobacterium tumefaciens) act on disaccharides that contain a glucose moiety at the non-reducing end, such as sucrose, trehalose, leucrose, palatinose, trehalulose, and maltitol, forming the respective 3'-keto derivatives. cf. EC, glucoside 3-dehydrogenase (cytochrome c).

Links to other databases: BRENDA, EXPASY, GTD, KEGG, MetaCyc, CAS registry number: 9031-74-7


1. Jensen, J.B., Ampomah, O.Y., Darrah, R., Peters, N.K. and Bhuvaneswari, T.V. Role of trehalose transport and utilization in Sinorhizobium meliloti-alfalfa interactions. Mol. Plant Microbe Interact. 18 (2005) 694-702. [PMID: 16042015]

2. Ampomah, O.Y., Avetisyan, A., Hansen, E., Svenson, J., Huser, T., Jensen, J.B. and Bhuvaneswari, T.V. The thuEFGKAB operon of Rhizobia and Agrobacterium tumefaciens codes for transport of trehalose, maltitol, and isomers of sucrose and their assimilation through the formation of their 3-keto derivatives. J. Bacteriol. 195 (2013) 3797-3807. [PMID: 23772075]

3. Ampomah, O.Y. and Jensen, J.B. The trehalose utilization gene thuA ortholog in Mesorhizobium loti does not influence competitiveness for nodulation on Lotus spp. World J. Microbiol. Biotechnol. 30 (2014) 1129-1134. [PMID: 24142427]

[EC created 1972, modified 2022]

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