MALLITVVTCFMIILDTSQSCHTPDDFVAITSPGHIMIGGLFAIHEKMLSSDDHPRRPQIQKCAGFEISVFLQTLAMIHSIEMINNSTLLSGVKLGYEIYDTCTEVTAAMAATLRFLSKFNCSRETVVFQCDYSSYMPRVKAVIGAGYSETSIAVSRMLNLQLMPQVSYESTAEILSDKIRFPSFLRTVPSDFYQTKAMAHLIRQSGWNWIGAITTDDDYGRLALNTFAIQAAENNVCIAFKEVLPAFLSDNTIEVRINQTLEKIIAEAQVNVIVVFLRKFHVFNLFTKAIERKISKIWIASDNWSTATKIITIPNVKKLGKVVGFAFRRGNTSSFHSFLQTLHMYPNDNNKPLHEFAMLVSACKYIKDGDLSQCISNYSQATLTYDTTKTIENHLFKRNDFLWHYTEPGLIYSIQLAVFALGHAIRDLCQARDCKKPNAFQPWELLAVLKNVTFTDGRNSFHFDAHGDLNTGYDVVLWKETNGLMTVTKMAEYDLQRDVFITTNQETKHEFRKLKQILSKCSKECSPGQMKKATGSQHSCCYECVSCPENHYSNETDMDHCLLCNNETHWAPVRSTTCFEKEVEYLDWDDSLALLLIALSLLGIAFVLAIGIIFTRNLKTPVVKSSGGLVVCYVMLICHALNFASTGFFIGEPQDFACKTRQTLFGVSFTLCVSCILTKSLKILLAFSFDPKLTMFLKCLYRPVPIVLTCTGIQVVICTLWLVLAAPSVEENISLPRVIILECEEGSALAFGTMLGYITVLAFICFVFAFKGRKLPENYNEAKFLTFGMLIYFIAWITFIPVYTTTFGKYLPAVEIIVILISNYGILCCIFFPKCYIILCKQKTNTKSAFLQMVYNYSAHSVDSLALSHVSLDSTSYDTATTNQSPGNKMTACQNDNHLPAQVLPHTGTAKTIKASKTLRQKRSSSI

Receptor activated by multiple ligands, including osteocalcin (BGLAP), basic amino acids, and various cations (PubMed:15576628, PubMed:16199532, PubMed:21333348). Activated by amino acids with a preference for basic amino acids such as L-Lys, L-Arg and L-ornithine but also by small and polar amino acids (PubMed:15576628). The L-alpha amino acids respond is augmented by divalent cations Ca(2+) and Mg(2+) (PubMed:16199532). Seems to act through a G(q)/G(11) and G(i)-coupled pathway (PubMed:15576628, PubMed:16199532). Regulates testosterone production by acting as a ligand for uncarboxylated osteocalcin hormone: osteocalcin-binding at the surface of Leydig cells initiates a signaling response that promotes the expression of enzymes required for testosterone synthesis in a CREB-dependent manner (PubMed:21333348). Mediates the non-genomic effects of androgens in multiple tissue (PubMed:19050760). May coordinate nutritional and hormonal anabolic signals through the sensing of extracellular amino acids, osteocalcin, divalent ions and its responsiveness to anabolic steroids (PubMed:19050760, PubMed:20947496).