PcG(Polycomb group)家族蛋白不仅通过添加组蛋白修饰,也通过调节染色质三维结构来影响染色质状态。PRC1(Polycomb repress complex 1)复合体的核心组分BMI1s(B LYMPHOMA MOLONEY MURINE LEUKEMIA VIRUS INSERTION REGION 1 HOMOLOG ...