Asc Type Amino Acid Transporter 1 (ASC1)

SLC7A10, in association with 4F2HC (SLC3A2), mediates high-affinity transport of D-serine and several other neutral amino acids.The deduced 530-amino acid protein contains 12 transmembrane regions and a conserved cysteine residue (cys160) in the putative extracellular loop between transmembrane domains 3 and 4. This residue was presumed to be linked to 4f2hc via a disulfide bond. Northern blot analysis detected a 1.9-kb transcript in mouse brain and lung, with weaker expression in placenta. A single 4.4-kb transcript was expressed in small intestine.ASC1 shares 91% identity with mouse Asc1. Northern blot analysis detected 1.3-, 2.0-, 4.3-, and 6.0-kb transcripts in brain, heart, placenta, skeletal muscle, and kidney. The 2.0-kb transcript predominated in brain.