IUBMB Enzyme Nomenclature


Accepted name: guanine-transporting ATPase

Reaction: ATP + H2O + guanineout = ADP + phosphate + guaninein

Systematic name: ATP phosphohydrolase (guanine-importing)

Comments: ABC-type (ATP-binding cassette-type) ATPase, characterised by the presence of two similar ATP-binding domains. Does not undergo phosphorylation during the transport process. A eukaryotic enzyme that imports guanine and tryptophan (it contains a single ATP-binding site).

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


1. Dreesen, T.D., Johnson, D.H and Henikoff, S. The brown protein of Drosophila melanogaster is similar to the white protein and to components of active transport complexes. Mol. Cell Biol. 8 (1988) 5206-5215. [PMID: 3149712]

2. Tearle, R.G., Belote, J.M., McKeown, M., Baker, B.S. and Howells, A.J. Cloning and characterization of the scarlet gene of Drosophila melanogaster. Genetics 122 (1989) 595-606. [PMID: 89339145]

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

[EC created 2000]

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