該基因編碼G蛋白偶聯受體基因家族的一個成員編碼蛋白與血管緊張素受體有關，但實際上是一種抑制腺苷酸環化酶活性的apelin受體，通過發揮高血壓作用，對血管緊張素ii的壓力作用起反調節作用。它在心血管和中樞神經系統、葡萄糖代謝、胚胎和腫瘤血管生成以及作為人類免疫缺陷病毒（HIV-1）受體發揮作用由選擇性剪接產生的兩個轉錄變體已經被鑒定。[由RefSeq提供，2009年7月]
This gene encodes a member of the G protein-coupled receptor gene family. The encoded protein is related to the angiotensin receptor, but is actually an apelin receptor that inhibits adenylate cyclase activity and plays a counter-regulatory role against the pressure action of angiotensin II by exerting hypertensive effect. It functions in the cardiovascular and central nervous systems, in glucose metabolism, in embryonic and tumor angiogenesis and as a human immunodeficiency virus (HIV-1) coreceptor. Two transcript variants resulting from alternative splicing have been identified. [provided by RefSeq, Jul 2009]