该基因编码受体型蛋白酪氨酸磷酸酶R3亚型家族的一个成员。这些蛋白定位于极化细胞的顶端表面，通过激活src家族激酶可能具有组织特异性功能。该基因包含两个不同的启动子，并且已经观察到编码多个亚型的选择性剪接转录变体。编码蛋白可能具有多种亚型特异性和组织特异性功能，包括调节破骨细胞的产生和活性，抑制细胞增殖和促进细胞凋亡。该基因是一种候选的抑癌基因，在几种癌症中已观察到该基因的表达降低。[由RefSeq提供，2011年5月]
This gene encodes a member of the R3 subtype family of receptor-type protein tyrosine phosphatases. These proteins are localized to the apical surface of polarized cells and may have tissue-specific functions through activation of Src family kinases. This gene contains two distinct promoters, and alternatively spliced transcript variants encoding multiple isoforms have been observed. The encoded proteins may have multiple isoform-specific and tissue-specific functions, including the regulation of osteoclast production and activity, inhibition of cell proliferation and facilitation of apoptosis. This gene is a candidate tumor suppressor, and decreased expression of this gene has been observed in several types of cancer. [provided by RefSeq, May 2011]