該基因編碼的蛋白是蛋白酪氨酸磷酸酶（PTP）家族的成員。眾所周知，PTP是調節多種細胞過程的信號分子，包括細胞生長、分化、有絲分裂周期和致癌轉化。該PTP包含一個細胞外區、一個單跨膜段和兩個串聯胞質內催化域，因此代表一種受體型PTP。該蛋白的細胞外區由三個免疫球蛋白樣結構域和八個纖維連接蛋白III型結構域組成。對雞和蒼蠅的相似基因的研究表明，這種PTP在促進軸突生長和調節神經元軸突引導中的作用。該基因的多種選擇性剪接轉錄變體已被報道。在5號染色體上發現了一個相關的假基因。
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 three Ig-like and eight fibronectin type III-like domains. Studies of the similar genes in chicken and fly suggest the role of this PTP is in promoting neurite growth, and regulating neurons axon guidance. Multiple alternatively spliced transcript variants of this gene have been reported. A related pseudogene has been identified on chromosome 5.