+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-25044 | |||||||||
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タイトル | Cryo-EM structure of the SHOC2:PP1C:MRAS complex | |||||||||
マップデータ | Final map | |||||||||
試料 |
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キーワード | Phosphatase / leucine rich repeat / RAF / complex / SIGNALING PROTEIN | |||||||||
機能・相同性 | 機能・相同性情報 cellular response to growth hormone stimulus / protein phosphatase type 1 complex / negative regulation of neural precursor cell proliferation / PTW/PP1 phosphatase complex / regulation of nucleocytoplasmic transport / GTP-dependent protein binding / cyclic-GMP-AMP transmembrane import across plasma membrane / nerve growth factor signaling pathway / protein phosphatase regulator activity / protein phosphatase 1 binding ...cellular response to growth hormone stimulus / protein phosphatase type 1 complex / negative regulation of neural precursor cell proliferation / PTW/PP1 phosphatase complex / regulation of nucleocytoplasmic transport / GTP-dependent protein binding / cyclic-GMP-AMP transmembrane import across plasma membrane / nerve growth factor signaling pathway / protein phosphatase regulator activity / protein phosphatase 1 binding / lamin binding / SHOC2 M1731 mutant abolishes MRAS complex function / Gain-of-function MRAS complexes activate RAF signaling / positive regulation of Ras protein signal transduction / microtubule organizing center / myosin phosphatase activity / protein serine/threonine phosphatase activity / glycogen metabolic process / protein-serine/threonine phosphatase / Triglyceride catabolism / Maturation of hRSV A proteins / entrainment of circadian clock by photoperiod / phosphatase activity / phosphoprotein phosphatase activity / cleavage furrow / blastocyst development / negative regulation of neuron differentiation / fibroblast growth factor receptor signaling pathway / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / positive regulation of glial cell proliferation / Resolution of Sister Chromatid Cohesion / positive regulation of neuron differentiation / protein dephosphorylation / Downregulation of TGF-beta receptor signaling / small monomeric GTPase / G protein activity / cellular response to leukemia inhibitory factor / RHO GTPases Activate Formins / RAF activation / circadian regulation of gene expression / neuron differentiation / regulation of circadian rhythm / kinetochore / positive regulation of neuron projection development / Separation of Sister Chromatids / GDP binding / MAPK cascade / Circadian Clock / presynapse / midbody / actin cytoskeleton organization / spermatogenesis / protein phosphatase binding / mitochondrial outer membrane / Ras protein signal transduction / dendritic spine / nuclear speck / cell cycle / protein domain specific binding / cell division / focal adhesion / GTPase activity / glutamatergic synapse / protein-containing complex binding / nucleolus / GTP binding / protein kinase binding / signal transduction / protein-containing complex / mitochondrion / RNA binding / nucleoplasm / nucleus / metal ion binding / plasma membrane / cytoplasm / cytosol 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.95 Å | |||||||||
データ登録者 | Liau NPD / Johnson MC | |||||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: Nature / 年: 2022 タイトル: Structural basis for SHOC2 modulation of RAS signalling. 著者: Nicholas P D Liau / Matthew C Johnson / Saeed Izadi / Luca Gerosa / Michal Hammel / John M Bruning / Timothy J Wendorff / Wilson Phung / Sarah G Hymowitz / Jawahar Sudhamsu / 要旨: The RAS-RAF pathway is one of the most commonly dysregulated in human cancers. Despite decades of study, understanding of the molecular mechanisms underlying dimerization and activation of the kinase ...The RAS-RAF pathway is one of the most commonly dysregulated in human cancers. Despite decades of study, understanding of the molecular mechanisms underlying dimerization and activation of the kinase RAF remains limited. Recent structures of inactive RAF monomer and active RAF dimer bound to 14-3-3 have revealed the mechanisms by which 14-3-3 stabilizes both RAF conformations via specific phosphoserine residues. Prior to RAF dimerization, the protein phosphatase 1 catalytic subunit (PP1C) must dephosphorylate the N-terminal phosphoserine (NTpS) of RAF to relieve inhibition by 14-3-3, although PP1C in isolation lacks intrinsic substrate selectivity. SHOC2 is as an essential scaffolding protein that engages both PP1C and RAS to dephosphorylate RAF NTpS, but the structure of SHOC2 and the architecture of the presumptive SHOC2-PP1C-RAS complex remain unknown. Here we present a cryo-electron microscopy structure of the SHOC2-PP1C-MRAS complex to an overall resolution of 3 Å, revealing a tripartite molecular architecture in which a crescent-shaped SHOC2 acts as a cradle and brings together PP1C and MRAS. Our work demonstrates the GTP dependence of multiple RAS isoforms for complex formation, delineates the RAS-isoform preference for complex assembly, and uncovers how the SHOC2 scaffold and RAS collectively drive specificity of PP1C for RAF NTpS. Our data indicate that disease-relevant mutations affect complex assembly, reveal the simultaneous requirement of two RAS molecules for RAF activation, and establish rational avenues for discovery of new classes of inhibitors to target this pathway. | |||||||||
履歴 |
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-構造の表示
添付画像 |
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-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_25044.map.gz | 32 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-25044-v30.xml emd-25044.xml | 23.3 KB 23.3 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_25044_fsc.xml | 8.9 KB | 表示 | FSCデータファイル |
画像 | emd_25044.png | 107.9 KB | ||
Filedesc metadata | emd-25044.cif.gz | 6.8 KB | ||
その他 | emd_25044_half_map_1.map.gz emd_25044_half_map_2.map.gz | 59.4 MB 59.4 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-25044 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-25044 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_25044_validation.pdf.gz | 780.2 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_25044_full_validation.pdf.gz | 779.7 KB | 表示 | |
XML形式データ | emd_25044_validation.xml.gz | 16.4 KB | 表示 | |
CIF形式データ | emd_25044_validation.cif.gz | 21 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-25044 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-25044 | HTTPS FTP |
-関連構造データ
関連構造データ | 7sd0MC 7sd1C M: このマップから作成された原子モデル C: 同じ文献を引用 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_25044.map.gz / 形式: CCP4 / 大きさ: 64 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||
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注釈 | Final map | ||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 0.838 Å | ||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-ハーフマップ: Half map A
ファイル | emd_25044_half_map_1.map | ||||||||||||
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注釈 | Half map A | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: Half map B
ファイル | emd_25044_half_map_2.map | ||||||||||||
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注釈 | Half map B | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
+全体 : Ternary complex of SHOC2:PP1C:MRAS
+超分子 #1: Ternary complex of SHOC2:PP1C:MRAS
+超分子 #2: SHOC2
+超分子 #3: MRAS
+超分子 #4: PP1C
+分子 #1: Leucine-rich repeat protein SHOC-2
+分子 #2: Ras-related protein M-Ras
+分子 #3: Serine/threonine-protein phosphatase PP1-gamma catalytic subunit
+分子 #4: PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER
+分子 #5: MAGNESIUM ION
+分子 #6: MANGANESE (II) ION
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
濃度 | 0.19 mg/mL | |||||||||||||||||||||
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緩衝液 | pH: 7.5 構成要素:
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グリッド | モデル: UltrAuFoil R1.2/1.3 / 材質: GOLD / 支持フィルム - 材質: GRAPHENE OXIDE / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 20 sec. | |||||||||||||||||||||
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 277 K / 装置: FEI VITROBOT MARK IV 詳細: Used the "perpetually hydrated" method of applying graphene oxide. (Cheung et al., 2018). |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 撮影したグリッド数: 1 / 平均電子線量: 64.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 1.5 µm / 最小 デフォーカス(公称値): 0.5 µm / 倍率(公称値): 105000 |
試料ステージ | ホルダー冷却材: NITROGEN |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |