6H4H

Usp28 catalytic domain variant E593D in complex with UbPA

6H4H の概要

• エントリーDOI: 10.2210/pdb6h4h/pdb
• 分子名称: Ubiquitin carboxyl-terminal hydrolase 28, Polyubiquitin-B, SULFATE ION, ... (4 entities in total)
• 機能のキーワード: ubiquitin, deubiquitinase, usp, cancer, hydrolase
• 由来する生物種: Homo sapiens (Human); 詳細
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 147345.57

構造登録者

Klemm, T.A.,Sauer, F.,Kisker, C. (登録日: 2018-07-21, 公開日: 2019-03-27, 最終更新日: 2025-04-09)

主引用文献

Sauer, F.,Klemm, T.,Kollampally, R.B.,Tessmer, I.,Nair, R.K.,Popov, N.,Kisker, C.
Differential Oligomerization of the Deubiquitinases USP25 and USP28 Regulates Their Activities.
Mol.Cell, 74:421-, 2019

PubMed Abstract: Deubiquitinases have emerged as promising drug targets for cancer therapy. The two DUBs USP25 and USP28 share high similarity but vary in their cellular functions. USP28 is known for its tumor-promoting role, whereas USP25 is a regulator of the innate immune system and, recently, a role in tumorigenesis was proposed. We solved the structures of the catalytic domains of both proteins and established substantial differences in their activities. While USP28 is a constitutively active dimer, USP25 presents an auto-inhibited tetramer. Our data indicate that the activation of USP25 is not achieved through substrate or ubiquitin binding. USP25 cancer-associated mutations lead to activation in vitro and in vivo, thereby providing a functional link between auto-inhibition and the cancer-promoting role of the enzyme. Our work led to the identification of significant differences between USP25 and USP28 and provided the molecular basis for the development of new and highly specific anti-cancer drugs.

PubMed: 30926243
DOI: 10.1016/j.molcel.2019.02.029

実験手法

X-RAY DIFFRACTION (3.5 Å)