- EMDB-0896: High resolution structure of FANCA C-terminal domain (CTD) -
+
データを開く
IDまたはキーワード:
読み込み中...
-
基本情報
登録情報
データベース: EMDB / ID: EMD-0896
タイトル
High resolution structure of FANCA C-terminal domain (CTD)
マップデータ
試料
複合体: Fanconi anemia complementation group A
タンパク質・ペプチド: Fanconi anemia complementation group A
キーワード
nuclear localization / fanconi anemia core protein / fanconi anemia complementation group a / interstrand crosslink repair / DNA REPAIR
機能・相同性
Fanconi anaemia group A protein / Fanconi anaemia group A protein, N-terminal domain / Fanconi anaemia group A protein / Fanconi anaemia group A protein N terminus / Fanconi anaemia nuclear complex / regulation of regulatory T cell differentiation / interstrand cross-link repair / membrane / FA complementation group A L homeolog
ジャーナル: Nucleic Acids Res / 年: 2020 タイトル: Structural basis of the fanconi anemia-associated mutations within the FANCA and FANCG complex. 著者: Eunyoung Jeong / Seong-Gyu Lee / Hyun-Suk Kim / Jihyeon Yang / Jinwoo Shin / Youngran Kim / Jihan Kim / Orlando D Schärer / Youngjin Kim / Jung-Eun Yeo / Ho Min Kim / Yunje Cho / 要旨: Monoubiquitination of the Fanconi anemia complementation group D2 (FANCD2) protein by the FA core ubiquitin ligase complex is the central event in the FA pathway. FANCA and FANCG play major roles in ...Monoubiquitination of the Fanconi anemia complementation group D2 (FANCD2) protein by the FA core ubiquitin ligase complex is the central event in the FA pathway. FANCA and FANCG play major roles in the nuclear localization of the FA core complex. Mutations of these two genes are the most frequently observed genetic alterations in FA patients, and most point mutations in FANCA are clustered in the C-terminal domain (CTD). To understand the basis of the FA-associated FANCA mutations, we determined the cryo-electron microscopy (EM) structures of Xenopus laevis FANCA alone at 3.35 Å and 3.46 Å resolution and two distinct FANCA-FANCG complexes at 4.59 and 4.84 Å resolution, respectively. The FANCA CTD adopts an arc-shaped solenoid structure that forms a pseudo-symmetric dimer through its outer surface. FA- and cancer-associated point mutations are widely distributed over the CTD. The two different complex structures capture independent interactions of FANCG with either FANCA C-terminal HEAT repeats, or the N-terminal region. We show that mutations that disturb either of these two interactions prevent the nuclear localization of FANCA, thereby leading to an FA pathway defect. The structure provides insights into the function of FANCA CTD, and provides a framework for understanding FA- and cancer-associated mutations.