IUBMB Enzyme Nomenclature


Accepted name: ABC-type β-glucan transporter

Reaction: ATP + H2O + β-glucan[side 1] = ADP + phosphate + β-glucan[side 2]

Other name(s): β-glucan-transporting ATPase

Systematic name: ATP phosphohydrolase (ABC-type, β-glucan-exporting)

Comments: An ATP-binding cassette (ABC) type transporter, characterized by the presence of two similar ATP-binding domains/proteins and two integral membrane domains/proteins. An enzyme found in Gram-negative bacteria that exports β-glucans.

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


1. Fath, M.J. and Kolter, R. ABC transporters: bacterial exporters. Microbiol. Rev. 57 (1993) 995-1017. [PMID: 8302219]

2. Becker, A., Kuster, H., Niehaus, K. and Puhler, A. Extension of the Rhizobium meliloti succinoglycan biosynthesis gene cluster: identification of the exsA gene encoding an ABC transporter protein, and the exsB gene which probably codes for a regulator of succinoglycan biosynthesis. Mol. Gen. Genet. 249 (1995) 487-497. [PMID: 8544814]

3. Saier, M.H., Jr. Molecular phylogeny as a basis for the classification of transport proteins from bacteria, archaea and eukarya. Adv. Microb. Physiol. 40 (1998) 81-136. [PMID: 9889977]

4. Griffiths, J.K. and Sansom, C.E. The Transporter Factsbook, Academic Press, San Diego, 1998.

[EC created 2000 as EC, transferred 2018 to EC]

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