National Institutes of Health/National Cancer Institute (NIH/NCI)
ZIA BC 011744
米国
National Institutes of Health/National Cancer Institute (NIH/NCI)
ZIA BC 010329
米国
引用
ジャーナル: Nat Commun / 年: 2022 タイトル: Structural insights into the BRAF monomer-to-dimer transition mediated by RAS binding. 著者: Juliana A Martinez Fiesco / David E Durrant / Deborah K Morrison / Ping Zhang / 要旨: RAF kinases are essential effectors of RAS, but how RAS binding initiates the conformational changes needed for autoinhibited RAF monomers to form active dimers has remained unclear. Here, we present ...RAF kinases are essential effectors of RAS, but how RAS binding initiates the conformational changes needed for autoinhibited RAF monomers to form active dimers has remained unclear. Here, we present cryo-electron microscopy structures of full-length BRAF complexes derived from mammalian cells: autoinhibited, monomeric BRAF:14-3-3:MEK and BRAF:14-3-3 complexes, and an inhibitor-bound, dimeric BRAF:14-3-3 complex, at 3.7, 4.1, and 3.9 Å resolution, respectively. In both autoinhibited, monomeric structures, the RAS binding domain (RBD) of BRAF is resolved, revealing that the RBD forms an extensive contact interface with the 14-3-3 protomer bound to the BRAF C-terminal site and that key basic residues required for RBD-RAS binding are exposed. Moreover, through structure-guided mutational studies, our findings indicate that RAS-RAF binding is a dynamic process and that RBD residues at the center of the RBD:14-3-3 interface have a dual function, first contributing to RAF autoinhibition and then to the full spectrum of RAS-RBD interactions.
履歴
登録
2021年4月9日
登録サイト: RCSB / 処理サイト: RCSB
改定 1.0
2022年1月26日
Provider: repository / タイプ: Initial release
改定 1.0
2022年1月26日
Data content type: EM metadata / Data content type: EM metadata / Provider: repository / タイプ: Initial release
改定 1.0
2022年1月26日
Data content type: FSC / Data content type: FSC / Provider: repository / タイプ: Initial release
改定 1.0
2022年1月26日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2022年1月26日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2022年1月26日
Data content type: FSC / Data content type: FSC / Provider: repository / タイプ: Initial release
改定 1.0
2022年1月26日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2022年1月26日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2022年1月26日
Data content type: FSC / Data content type: FSC / Provider: repository / タイプ: Initial release
改定 1.0
2022年1月26日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2022年1月26日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / カテゴリ: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name