human_protein_name: apelin preproprotein
description: APJ, a seven transmembrane domain G-protein-coupled receptor, functions as a coreceptor for gp120 from some HIV-1 strains; a natural peptide ligand for APJ, apelin-13, efficiently blocks APJ coreceptor activity
human_protein_sequence: MNLRLCVQALLLLWLSLTAVCGGSLMPLPDGNGLEDGNVRHLVQPRGSRNGPGPWQGGRRKFRRQRPRLSHKGPMPF