8ST7

Structure of E3 ligase VsHECT bound to ubiquitin

8ST7 の概要

• エントリーDOI: 10.2210/pdb8st7/pdb
• 分子名称: Ubiquitin, E3 ubiquitin-protein ligase SopA-like catalytic domain-containing protein, prop-2-en-1-amine, ... (4 entities in total)
• 機能のキーワード: e3 ubiquitin ligase, ligase, transferase
• 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: 69377.15

構造登録者

Franklin, T.G.,Pruneda, J.N. (登録日: 2023-05-09, 公開日: 2023-07-12, 最終更新日: 2024-01-03)

主引用文献

Franklin, T.G.,Brzovic, P.S.,Pruneda, J.N.
Bacterial ligases reveal fundamental principles of polyubiquitin specificity.
Mol.Cell, 83:4538-4554.e4, 2023

PubMed Abstract: Homologous to E6AP C terminus (HECT) E3 ubiquitin (Ub) ligases direct substrates toward distinct cellular fates dictated by the specific form of monomeric or polymeric Ub (polyUb) signal attached. How polyUb specificity is achieved has been a long-standing mystery, despite extensive study in various hosts, ranging from yeast to human. The bacterial pathogens enterohemorrhagic Escherichia coli and Salmonella Typhimurium encode outlying examples of "HECT-like" (bHECT) E3 ligases, but commonalities to eukaryotic HECT (eHECT) mechanism and specificity had not been explored. We expanded the bHECT family with examples in human and plant pathogens. Three bHECT structures in primed, Ub-loaded states resolved key details of the entire Ub ligation process. One structure provided a rare glimpse into the act of ligating polyUb, yielding a means to rewire polyUb specificity of both bHECT and eHECT ligases. Studying this evolutionarily distinct bHECT family has revealed insight into the function of key bacterial virulence factors as well as fundamental principles underlying HECT-type Ub ligation.

PubMed: 38091999
DOI: 10.1016/j.molcel.2023.11.017

実験手法

X-RAY DIFFRACTION (1.44 Å)