这个基因编码的蛋白质是免疫球蛋白超家族的一员。它是一种糖基磷脂酰肌醇（GPI）锚定的神经元膜蛋白，起着细胞粘附分子的作用它可能在发育中的神经系统轴突连接的形成中起作用已经发现该基因的多个交替剪接的转录变体编码不同的亚型。[由RefSeq提供，2011年12月]
The protein encoded by this gene is a member of the immunoglobulin superfamily. It is a glycosylphosphatidylinositol (GPI)-anchored neuronal membrane protein that functions as a cell adhesion molecule. It may play a role in the formation of axon connections in the developing nervous system. Multiple alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2011]