IUBMB Enzyme Nomenclature


Accepted name: ABC-type α-factor-pheromone transporter

Reaction: ATP + H2O + α-factor[side 1] = ADP + phosphate + α-factor[side 2]

Other name(s): α-factor-transporting ATPase; α-factor-pheromone transporting ATPase

Systematic name: ATP phosphohydrolase (ABC-type, α-factor-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. Does not undergo phosphorylation during the transport process. A yeast enzyme that exports the α-factor sex pheromone.

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


1. Michaelis, S. STE6, the yeast α-factor exporter. Semin. Cell Biol. 4 (1993) 17-27. [PMID: 8095825]

2. 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]

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

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