這個基因編碼蛋白磷酸酶的催化亞單位，是調節細胞周期進程的信號通路的一個組成部分。存在編碼不同蛋白質亞型的剪接變異體。該基因的假基因位于X染色體上。
This gene encodes the catalytic subunit of protein phosphatase, a component of a signaling pathway regulating cell cycle progression. Splice variants encoding different protein isoforms exist. The pseudogene of this gene is located on chromosome X.