†Institute for Genetics, University of Cologne, 50674 Köln, Germany.
Biochem J. 2014 Jan 1;457(1):207-14. doi: 10.1042/BJ20130753.
RNF4 (RING finger protein 4) is a STUbL [SUMO (small ubiquitin-related modifier)-targeted ubiquitin ligase] controlling PML (promyelocytic leukaemia) nuclear bodies, DNA double strand break repair and other nuclear functions. In the present paper, we describe that the sequence and spacing of the SIMs (SUMO-interaction motifs) in RNF4 regulate the avidity-driven recognition of substrate proteins carrying SUMO chains of variable length.
RNF4(环指蛋白 4)是一种 STUbL [SUMO(小泛素相关修饰物)靶向泛素连接酶],可控制 PML(早幼粒细胞白血病)核体、DNA 双链断裂修复和其他核功能。在本文中,我们描述了 RNF4 中的 SIMs(SUMO 相互作用基序)的序列和间隔调节了对携带不同长度 SUMO 链的底物蛋白的亲和力驱动识别。