...
首页> 外文期刊>Molecular cell >A Conserved RING Finger Protein Required for Histone H2B Monoubiquitination and Cell Size Control.
【24h】

A Conserved RING Finger Protein Required for Histone H2B Monoubiquitination and Cell Size Control.

机译:组蛋白H2B单泛素化和细胞大小控制所需的保守的RING指蛋白。

获取原文
获取原文并翻译 | 示例
           

摘要

Monoubiquitination of histone H2B is required for methylation of histone H3 on lysine 4 (K4), a modification associated with active chromatin. The identity of the cognate ubiquitin ligase is unknown. We identify Bre1 as an evolutionarily conserved RING finger protein required in vivo for both H2B ubiquitination and H3 K4 methylation. The RING domain of Bre1 is essential for both of these modifications as is Lge1 (Large 1), a protein required for cell size control that copurifies with Bre1. In cells lacking the euchromatin-associated histone variant H2A.Z, BRE1, RAD6, and LGE1 are each essential for cell viability, supporting redundant functions for H2B ubiquitination and H2A substitution in the formation of active chromatin. Notably, analysis of mutants demonstrates a function for Bre1/Lge1-dependent H2B monoubiquitination in the control of cell size.
机译:组蛋白H2B的单泛素化是赖氨酸4(K4)上组蛋白H3的甲基化所必需的,赖氨酸4是与活性染色质相关的修饰。同源泛素连接酶的身份未知。我们确定Bre1为体内H2B泛素化和H3 K4甲基化所需的进化保守的RING指蛋白。 Bre1的RING结构域对这两个修饰都是必不可少的,Lge1(大1)是一种与Bre1共纯化的细胞大小控制所需的蛋白质,Lge1也是如此。在缺乏与常染色质相关的组蛋白变体H2A.Z的细胞中,BRE1,RAD6和LGE1都是细胞活力所必需的,在活性染色质形成过程中支持H2B泛素化和H2A替代的冗余功能。值得注意的是,突变体的分析表明在控制细胞大小中,Bre1 / Lge1依赖性H2B单泛素化起作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号