該基因編碼的蛋白是蛋白酪氨酸磷酸酶（ptp）家族的一員。眾所周知，ptps是調節細胞生長、分化、有絲分裂周期和癌基因轉化等多種細胞過程的信號分子。該ptp包含一個胞外區、一個跨膜段和兩個串聯胞漿內催化結構域，因此代表一種受體型ptp。該蛋白的胞外區域由多個ig樣結構域和纖維粘連蛋白iii型結構域組成。對小鼠相似基因的研究表明，ptp可能參與了胚胎發生過程中的細胞-細胞相互作用、原發性軸突形成和軸突引導。這種ptp還與成人神經修復的分子調控有關。已經報道了四種選擇性剪接的轉錄變體，它們編碼不同的蛋白質。
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.