National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R35GM118099
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
1S10OD026881
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
1S10OD020054
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
1S10OD021741
米国
引用
ジャーナル: Nat Commun / 年: 2023 タイトル: Hsp90 provides a platform for kinase dephosphorylation by PP5. 著者: Maru Jaime-Garza / Carlos A Nowotny / Daniel Coutandin / Feng Wang / Mariano Tabios / David A Agard / 要旨: The Hsp90 molecular chaperone collaborates with the phosphorylated Cdc37 cochaperone for the folding and activation of its many client kinases. As with many kinases, the Hsp90 client kinase CRaf is ...The Hsp90 molecular chaperone collaborates with the phosphorylated Cdc37 cochaperone for the folding and activation of its many client kinases. As with many kinases, the Hsp90 client kinase CRaf is activated by phosphorylation at specific regulatory sites. The cochaperone phosphatase PP5 dephosphorylates CRaf and Cdc37 in an Hsp90-dependent manner. Although dephosphorylating Cdc37 has been proposed as a mechanism for releasing Hsp90-bound kinases, here we show that Hsp90 bound kinases sterically inhibit Cdc37 dephosphorylation indicating kinase release must occur before Cdc37 dephosphorylation. Our cryo-EM structure of PP5 in complex with Hsp90:Cdc37:CRaf reveals how Hsp90 both activates PP5 and scaffolds its association with the bound CRaf to dephosphorylate phosphorylation sites neighboring the kinase domain. Thus, we directly show how Hsp90's role in maintaining protein homeostasis goes beyond folding and activation to include post translationally modifying its client kinases.
名称: Hsp90:Cdc37:CRaf:PP5 complex / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#4 詳細: Yeast purified Hsp90:Cdc37:CRaf complex incubated with e. Coli purified PP5 (mutant H304A). Sample then cross-linked with 0.05% glutaraldehyde for 15m at room temperature, and ran over S200 sizing column.
由来(天然)
生物種: Homo sapiens (ヒト)
分子量
理論値: 57 KDa
+
超分子 #2: Protein Phosphatase 5 (H304A)
超分子
名称: Protein Phosphatase 5 (H304A) / タイプ: complex / ID: 2 / 親要素: 1 / 含まれる分子: #3 詳細: E coli purified Protein Phosphatase 5, with inactivating H304A mutation.
由来(天然)
生物種: Homo sapiens (ヒト)
+
分子 #1: Heat shock protein HSP 90-beta
分子
名称: Heat shock protein HSP 90-beta / タイプ: protein_or_peptide / ID: 1 詳細: Hsp90 sequence with HRV 3C cleavage site and one residue glycine linker. コピー数: 2 / 光学異性体: LEVO
名称: RAF proto-oncogene serine/threonine-protein kinase / タイプ: protein_or_peptide / ID: 3 詳細: CRaf/Raf1 kinase domain followed by a LPESG linker, Strep Tag II sequence (WSHPQFEK) and a HRV 3C cleavage site (LEVLFQ). コピー数: 1 / 光学異性体: LEVO / EC番号: non-specific serine/threonine protein kinase
詳細: 5FWL was used to fit the Hsp90 complex. 1WAO and 1S95 were used to fit the PP5 components.
最終 再構成
使用したクラス数: 3 / アルゴリズム: FOURIER SPACE / 解像度のタイプ: BY AUTHOR / 解像度: 3.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF ソフトウェア: (名称: RELION (ver. 3.1.3), UCSF ChimeraX (ver. 1.2.5)) 詳細: Three different maps were used for final composite map: Hsp90:Cdc37: 288k particles, 3.2A PP5 TPR: 215k particles, 3.3A PP5 catalytic domain: 43k particles, 3.8A Composite half maps were used ...詳細: Three different maps were used for final composite map: Hsp90:Cdc37: 288k particles, 3.2A PP5 TPR: 215k particles, 3.3A PP5 catalytic domain: 43k particles, 3.8A Composite half maps were used to get the final resolution in Relion PostProcessing. All original maps provided in the "Related entries" tab. 使用した粒子像数: 545237
初期 角度割当
タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: RELION (ver. 3.1.3)
最終 角度割当
タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: RELION (ver. 3.1.3)
最終 3次元分類
ソフトウェア - 名称: RELION (ver. 3.1.3) 詳細: Initial refinement on the Hsp90 component of the complex was followed up with focused classification with subtraction to obtain the separate maps used in this composite entry.
source_name: PDB, initial_model_type: experimental model
ソフトウェア
名称: ISOLDE (ver. 1.0b3)
詳細
This model was built using rigid body docking in Chimera and ChimeraX for all main chains, and RosettaCM to add remaining fragments not included in previous models. Refinement was done using iterative Phenix and RosettaRelax, and finalized with ISOLDE.
精密化
プロトコル: RIGID BODY FIT
得られたモデル
PDB-8gft: Hsp90 provides platform for CRaf dephosphorylation by PP5