该基因编码的蛋白是蛋白酪氨酸磷酸酶（ptp）家族的一员。众所周知，ptps是调节细胞生长、分化、有丝分裂周期和癌基因转化等多种细胞过程的信号分子。该ptp包含一个胞外区、一个跨膜段和两个串联胞浆内催化结构域，因此代表一种受体型ptp。该蛋白的胞外区域由多个ig样结构域和纤维粘连蛋白iii型结构域组成。对小鼠相似基因的研究表明，ptp可能参与了胚胎发生过程中的细胞-细胞相互作用、原发性轴突形成和轴突引导。这种ptp还与成人神经修复的分子调控有关。已经报道了四种选择性剪接的转录变体，它们编码不同的蛋白质。[由RefSeq提供，2008年7月]
The protein encoded by this gene is a member of the protein tyrosine phosphatase (PTP) family. PTPs are known to be signaling molecules that regulate a variety of cellular processes including cell growth, differentiation, mitotic cycle, and oncogenic transformation. This PTP contains an extracellular region, a single transmembrane segment and two tandem intracytoplasmic catalytic domains, and thus represents a receptor-type PTP. The extracellular region of this protein is composed of multiple Ig-like and fibronectin type III-like domains. Studies of the similar gene in mice suggested that this PTP may be involved in cell-cell interaction, primary axonogenesis, and axon guidance during embryogenesis. This PTP has been also implicated in the molecular control of adult nerve repair. Four alternatively spliced transcript variants, which encode distinct proteins, have been reported. [provided by RefSeq, Jul 2008]