RING finger domain / motif zinc finger, RING finger, 泛素, 连接酶

RING finger 是一种锌指结构 motif，zinc finger，同时也可充当泛素连接酶功能。

Many RING finger domains simultaneously bind ubiquitination enzymes and their substrates and hence function as ligases. Ubiquitination in turn targets the substrate protein for degradation