FAT2（FAT atypical cadherin 2），癌症关联基因，基因ID：2196，该基因是果蝇脂肪基因的第二个人类同源基因，它编码一种在果蝇发育过程中控制细胞增殖所必需的肿瘤抑制因子。该基因产物是钙粘蛋白超家族的一员，是一组完整的膜蛋白，具有钙粘蛋白型重复序列。该基因产物除含有34个钙黏蛋白串联重复序列外，还含有两个表皮生长因子（EGF）样重复序列和一个层粘连蛋白G结构域这种蛋白很可能是一种细胞粘附分子，控制细胞增殖，在小脑发育中起重要作用[由RefSeq提供，2008年7月]This gene is the second identified human homolog of the Drosophila fat gene， which encodes a tumor suppressor essential for controlling cell proliferation during Drosophila development. The gene product is a member of the cadherin superfamily， a group of integral membrane proteins characterized by the presence of cadherin-type repeats. In addition to containing 34 tandem cadherin-type repeats， the gene product has two epidermal growth factor (EGF)-like repeats and one laminin G domain. This protein most likely functions as a cell adhesion molecule， controlling cell proliferation and playing an important role in cerebellum development. [provided by RefSeq， Jul 2008]。