该基因编码一种能诱导细胞生长停滞和凋亡的抑癌蛋白。编码蛋白是一种核蛋白，与肿瘤抑制蛋白tp53发生物理作用，是p53信号通路的组成部分。这种基因的表达减少和重排已在各种癌症中被发现已经报道了编码不同亚型的多个选择性剪接转录变体。[由RefSeq提供，2008年7月]
This gene encodes a tumor suppressor protein that can induce cell growth arrest and apoptosis. The encoded protein is a nuclear protein that physically interacts with the tumor suppressor protein TP53 and is a component of the p53 signaling pathway. Reduced expression and rearrangement of this gene have been detected in various cancers. Multiple alternatively spliced transcript variants encoding distinct isoforms have been reported. [provided by RefSeq, Jul 2008]