- EMDB-8142: Cryo-EM structure of the human FANCD2/FANCI complex reveals a nov... -
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データベース: EMDB / ID: EMD-8142
タイトル
Cryo-EM structure of the human FANCD2/FANCI complex reveals a novel Tower domain required for FANCD2 monoubiquitination- FANCD2-minusTower/FANCI complex
ジャーナル: Nat Commun / 年: 2016 タイトル: The FANCD2-FANCI complex is recruited to DNA interstrand crosslinks before monoubiquitination of FANCD2. 著者: Chih-Chao Liang / Zhuolun Li / David Lopez-Martinez / William V Nicholson / Catherine Vénien-Bryan / Martin A Cohn / 要旨: The Fanconi anaemia (FA) pathway is important for the repair of DNA interstrand crosslinks (ICL). The FANCD2-FANCI complex is central to the pathway, and localizes to ICLs dependent on its ...The Fanconi anaemia (FA) pathway is important for the repair of DNA interstrand crosslinks (ICL). The FANCD2-FANCI complex is central to the pathway, and localizes to ICLs dependent on its monoubiquitination. It has remained elusive whether the complex is recruited before or after the critical monoubiquitination. Here, we report the first structural insight into the human FANCD2-FANCI complex by obtaining the cryo-EM structure. The complex contains an inner cavity, large enough to accommodate a double-stranded DNA helix, as well as a protruding Tower domain. Disease-causing mutations in the Tower domain are observed in several FA patients. Our work reveals that recruitment of the complex to a stalled replication fork serves as the trigger for the activating monoubiquitination event. Taken together, our results uncover the mechanism of how the FANCD2-FANCI complex activates the FA pathway, and explains the underlying molecular defect in FA patients with mutations in the Tower domain.
超分子 #1: human C-terminal deletedFANCD2/FANCI complex
超分子
名称: human C-terminal deletedFANCD2/FANCI complex / タイプ: complex / ID: 1 / 親要素: 0 詳細: FANCD2 is expressed using the pFastBac1 vector (Life Technologies) with an engineered N-terminal Flag-HA tag, and FANCI is expressed using the pFastBac1 vector (Life Technologies) with an ...詳細: FANCD2 is expressed using the pFastBac1 vector (Life Technologies) with an engineered N-terminal Flag-HA tag, and FANCI is expressed using the pFastBac1 vector (Life Technologies) with an engineered N-terminal Flag-MBP tag or a N-terminal Flag-HA tag
組換発現
生物種: Homo sapiens (ヒト) / 組換細胞: hela / 組換プラスミド: pX459