這種無內含子基因編碼的蛋白質存在于細胞核中，在那里它可以抑制DNA合成，促進S相停滯，并與凋亡相結合。這種DNA結合蛋白的表達被轉錄因子p53上調。
The protein encoded by this intronless gene is found in the nucleus, where it can inhibit DNA synthesis and promote S phase arrest coupled to apoptosis. The expression of this DNA binding protein is upregulated by transcription factor p53.