M-ABC2, a new human mitochondrial ATP-binding cassette membrane protein.
BC Cancer Research Centre, British Columbia Cancer Agency, University of British Columbia, 601 West 10th Avenue, V5Z 1L3, Vancouver, BC, Canada.
We have isolated a human cDNA encoding a novel ATP-binding cassette (ABC) protein whose gene was previously localized to chromosome 1q42 [Allikmets et al. (1995) Mamm. Genome 6, 111-117]. The gene transcript is expressed in all human tissues examined, with the highest levels in bone marrow. A non-expressed pseudogene also exists at chromosome 15q13-14. The new protein, which is most similar to the mitochondrial (M)-ABC1 protein, was also localized to mitochondria and therefore designated 'M-ABC2'. The N-terminus of M-ABC2 was shown to contain a mitochondrial-targeting signal sequence.
PMID: 10922475 [PubMed - indexed for MEDLINE]