National Institutes of Health/National Cancer Institute (NIH/NCI)
R01CA2144608
米国
National Institutes of Health/National Cancer Institute (NIH/NCI)
R01CA218278
米国
Swiss National Science Foundation
174331
スイス
Swiss National Science Foundation
191053
スイス
Other private
DRR-50-18
米国
引用
ジャーナル: Mol Cell / 年: 2021 タイトル: Solenoid architecture of HUWE1 contributes to ligase activity and substrate recognition. 著者: Moritz Hunkeler / Cyrus Y Jin / Michelle W Ma / Julie K Monda / Daan Overwijn / Eric J Bennett / Eric S Fischer / 要旨: HECT ubiquitin ligases play essential roles in metazoan development and physiology. The HECT ligase HUWE1 is central to the cellular stress response by mediating degradation of key death or survival ...HECT ubiquitin ligases play essential roles in metazoan development and physiology. The HECT ligase HUWE1 is central to the cellular stress response by mediating degradation of key death or survival factors, including Mcl1, p53, DDIT4, and Myc. Although mutations in HUWE1 and related HECT ligases are widely implicated in human disease, our molecular understanding remains limited. Here we present a comprehensive investigation of full-length HUWE1, deepening our understanding of this class of enzymes. The N-terminal ∼3,900 amino acids of HUWE1 are indispensable for proper ligase function, and our cryo-EM structures of HUWE1 offer a complete molecular picture of this large HECT ubiquitin ligase. HUWE1 forms an alpha solenoid-shaped assembly with a central pore decorated with protein interaction modules. Structures of HUWE1 variants linked to neurodevelopmental disorders as well as of HUWE1 bound to a model substrate link the functions of this essential enzyme to its three-dimensional organization.
根拠: gel filtration, elution volume fits with mass standards, mass spectrometry, from pull downs & purified protein, microscopy, Atomic model was built into the maps
タイプ
名称
対称操作
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identity operation
1_555
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要素
#1: タンパク質
E3ubiquitin-proteinligaseHUWE1 / ARF-binding protein 1 / ARF-BP1 / HECT / UBA and WWE domain-containing protein 1 / HECT-type E3 ...ARF-binding protein 1 / ARF-BP1 / HECT / UBA and WWE domain-containing protein 1 / HECT-type E3 ubiquitin transferase HUWE1 / Homologous to E6AP carboxyl terminus homologous protein 9 / HectH9 / Large structure of UREB1 / LASU1 / Mcl-1 ubiquitin ligase E3 / Mule / Upstream regulatory element-binding protein 1 / URE-binding protein 1