該基因編碼的蛋白屬于SER/THR蛋白激酶家族。在DNA損傷或存在未復制的DNA時，檢測點介導的細胞周期停滯是必需的。這種蛋白的作用是整合來自atm和atr的信號，atr是兩種參與DNA損傷反應的細胞周期蛋白，在減數分裂前期也與染色質有關。CDC25A蛋白磷酸酶被這種蛋白磷酸化是細胞延遲細胞周期進程以響應雙鏈DNA斷裂所必需的。一些選擇性剪接的轉錄變體已經被發現為這個基因。
The protein encoded by this gene belongs to the Ser/Thr protein kinase family. It is required for checkpoint mediated cell cycle arrest in response to DNA damage or the presence of unreplicated DNA. This protein acts to integrate signals from ATM and ATR, two cell cycle proteins involved in DNA damage responses, that also associate with chromatin in meiotic prophase I. Phosphorylation of CDC25A protein phosphatase by this protein is required for cells to delay cell cycle progression in response to double-strand DNA breaks. Several alternatively spliced transcript variants have been found for this gene.