Substrate In Vitro Evidence:
1. Transient expression of ANC7 n mouse embryo liver BNL-CL2 cells resulted in an increase in the level and activity of ferrochelatase (the last enzyme in the pathway to synthesize heme) and thioredoxin (a cytosolic protein containing Fe/S). ABC7 expression therefore contributes to the production of heme during the differentiation of erythroid cells. Taketani, S et al. Blood 2003 Apr 15, 101(8):3274-80 PMID 12480705.
Substrate In Vivo Evidence:
1. A SNP (I400M) in ABC7 was linked with X-linked sideroblastic anemia and ataxia (XLSA/A), a recessive disorder characterized by onset of non-progressive cerebellar ataxia and mild anemia. Allikmets, R et al. Hum Mol Genet. 8(5):743-9 PMID 10196363.
2. ABC7 plays a central role in the maturation of cytosolic iron-sulfur cluster-containing proteins. Bekri, S et al. Blood 2000 Nov 1, 96(9):3256-64 PMID 11050011.
Tissue Distribution Evidence:
1. Targeting signal indicates that the ABC7 gene product is likely to be located in the mitochondrial inner membrane. Shimada, Y et al. J Hum Genet 1998, 43(2):115-22 PMID 9621516.
Transmembrane prediction: Non-synonymous amino acid changes shown in red, indels (insertions and deletions) in blue, and synonymous changes in green. Exon(s) indicated by black outlines.
Copyright 2009, UCSF Pharmacogenetics of Membrane Transporters. All rights reserved.