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。這種PTP具有一個細胞外區、一個跨膜區和兩個串聯的細胞內催化域，因此代表一種受體型PTP。細胞外區包含一個MEPRIN-A5抗原PTP（MAM）結構域、免疫球蛋白樣和纖維連接蛋白III型重復序列。該PTP的蛋白結構域和小鼠對應物的表達模式表明其在中樞神經系統的信號轉導和細胞粘附中的作用。該基因的兩個選擇性剪接轉錄變體編碼不同的蛋白質，已被報道。
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 possesses an extracellular region, a single transmembrane region, and two tandem intracellular catalytic domains, and thus represents a receptor-type PTP. The extracellular region contains a meprin-A5 antigen-PTP (MAM) domain, Ig-like and fibronectin type III-like repeats. The protein domain structure and the expression pattern of the mouse counterpart of this PTP suggest its roles in both signal transduction and cellular adhesion in the central nervous system. Two alternatively spliced transcript variants of this gene, which encode distinct proteins, have been reported.