ABCG4: a novel human white family ABC-transporter expressed in the brain and eye

Abstract

White family transporters are a group of ATP-binding cassette (ABC) proteins that show sequence homology to the Drosophila white gene product. The Drosophila protein is a subunit of heterodimeric transporters of precursors for eye-pigment synthesis. A novel, human member of this family (ABCG4) has been identified. Northern blotting shows that ABCG4 is expressed specifically in the brain and the eye.