
RING domain E3 ubiquitin ligases - PubMed
E3 ligases confer specificity to ubiquitination by recognizing target substrates and mediating transfer of ubiquitin from an E2 ubiquitin-conjugating enzyme to substrate. The activity of most E3s is specified by a RING domain, which binds to an E2 approximately ubiquitin thioester and activates disc …
RING-type E3泛素连接酶抑制剂:进展、机遇和挑战 - 腾讯云
2021年1月31日 · ring e3s的e3活性依赖于环指结构域,并通过其与泛素结合酶e2相连。 RING E3S家族包括大量成员,如:原癌基因c—Cbl、SCF、APC和一些IAP家族成员等。 它们具有同时结合底物和泛素结合酶E2的能力,可以单独发挥作用。
图说 | 泛素连接酶的主要类型_蛋白质 - 搜狐
2020年6月4日 · 与HECT E3s类似,RBR(RING-betweenRING-RING)E3s通过两步反应催化泛素转移,其中泛素首先转移到E3上的催化半胱氨酸,然后转移到底物蛋白上。 特征结构 RBR名称源于两个 RING结构域(RING1和RING2) 的存在,这两个结构域由 RING间的结构域(in-between-RING domain,IBR) 分隔。
RING-type E3 ligases: Master manipulators of E2 ubiquitin …
2014年1月1日 · Here we review recent advances in RING-type E3 recognition of substrates, their cellular regulation, and their varied architecture. Additionally, recent structural insights into RING-type E3 function, with a focus on important interactions with E2s and ubiquitin, are reviewed.
RING 蛋白结构域 | Cell Signaling Technology
不像与泛素形成硫酯中间物的 HECT E3 连接酶,RING 指形结构可能促进泛素从 E2 酶直接被转运到靶标底物的赖氨酸残基上,从而介导泛素化。 RING 指形蛋白包括在 SCF 和 VCB 样 E3 复合体中发现的 Hrt1/Roc1/Rbx1 蛋白、后期促进复合体的 APC1 组分、Cbl 家族蛋白、MDM2 和许多其他经证实具有 E3 连接酶活性、结合 E2 或参与泛素化的蛋白。 RING 指形结构域还结合 TIF1β、PML 家族、NFX1 和 XPRF 等某些转录因子。 有关 RING 蛋白结构域的科学资源(含有有关结 …
The RING finger protein family in health and disease
2022年8月30日 · Ubiquitination is a highly conserved and fundamental posttranslational modification (PTM) in all eukaryotes regulating thousands of proteins. The RING (really interesting new gene) finger (RNF)...
E3 ubiquitin ligases: styles, structures and functions - PMC
RING E3 ligases are divided into two big families: monomeric RING finger and multi-subunit E3 ligases. Monomeric RING E3 ligases not only have the domain for substrate binding and ubiquitination, but also have the function of autoubiquitination, such as COP1, Mdm2, and TRAF6 [ …
Structure of a RING E3 ligase and ubiquitin-loaded E2 primed for ...
2012年7月29日 · To facilitate ubiquitin transfer, RING E3 ligases bind both substrate and a ubiquitin E2 conjugating enzyme linked to ubiquitin via a thioester bond, but the mechanism of transfer has remained...
RING E3 mechanism for ubiquitin ligation to a disordered …
For many E3 ligases, a mobile RING (Really Interesting New Gene) domain stimulates ubiquitin (Ub) transfer from a thioester-linked E2∼Ub intermediate to a lysine on a remotely bound disordered subs...
如何选择合适的RING E3连接酶小分子抑制剂? - 知乎专栏
RING结构域泛素化连接酶E3是泛素化连接酶中的最大家族,主要成员包括CRL(Cullin-RING连接酶)和APC/C(Anaphase-Promoting Complex)两大类。 利用RING E3泛素连接酶设计抗肿瘤靶向药物也是近些年的研究热点。