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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 9cph | ||||||
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| タイトル | Structural basis of BAK sequestration by MCL-1 and consequences for apoptosis initiation | ||||||
要素 |
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キーワード | APOPTOSIS / Anti-apoptosis / Mitochondrial poration / BCL-2 family / Cell fate | ||||||
| 機能・相同性 | 機能・相同性情報Activation and oligomerization of BAK protein / BH domain binding / B cell negative selection / BAK complex / negative regulation of endoplasmic reticulum calcium ion concentration / response to fungus / response to mycotoxin / Release of apoptotic factors from the mitochondria / limb morphogenesis / apoptotic process involved in blood vessel morphogenesis ...Activation and oligomerization of BAK protein / BH domain binding / B cell negative selection / BAK complex / negative regulation of endoplasmic reticulum calcium ion concentration / response to fungus / response to mycotoxin / Release of apoptotic factors from the mitochondria / limb morphogenesis / apoptotic process involved in blood vessel morphogenesis / post-embryonic camera-type eye morphogenesis / endocrine pancreas development / establishment or maintenance of transmembrane electrochemical gradient / B cell apoptotic process / negative regulation of mitochondrial outer membrane permeabilization involved in apoptotic signaling pathway / positive regulation of mitochondrial outer membrane permeabilization involved in apoptotic signaling pathway / endoplasmic reticulum calcium ion homeostasis / regulation of mitochondrial membrane permeability / calcium ion transport into cytosol / fibroblast apoptotic process / response to UV-C / mitochondrial fusion / Bcl-2 family protein complex / myeloid cell homeostasis / porin activity / thymocyte apoptotic process / pore complex / negative regulation of release of cytochrome c from mitochondria / positive regulation of IRE1-mediated unfolded protein response / positive regulation of release of cytochrome c from mitochondria / vagina development / B cell homeostasis / positive regulation of calcium ion transport into cytosol / positive regulation of proteolysis / intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stress / blood vessel remodeling / animal organ regeneration / cellular response to unfolded protein / Pyroptosis / heat shock protein binding / extrinsic apoptotic signaling pathway in absence of ligand / intrinsic apoptotic signaling pathway / release of cytochrome c from mitochondria / epithelial cell proliferation / response to gamma radiation / regulation of mitochondrial membrane potential / apoptotic signaling pathway / response to hydrogen peroxide / establishment of localization in cell / positive regulation of protein-containing complex assembly / cellular response to mechanical stimulus / intrinsic apoptotic signaling pathway in response to DNA damage / cellular response to UV / protein-folding chaperone binding / channel activity / response to ethanol / transmembrane transporter binding / mitochondrial outer membrane / regulation of cell cycle / positive regulation of apoptotic process / response to xenobiotic stimulus / protein heterodimerization activity / negative regulation of cell population proliferation / negative regulation of gene expression / apoptotic process / protein-containing complex binding / endoplasmic reticulum / protein homodimerization activity / mitochondrion / metal ion binding / identical protein binding / cytosol 類似検索 - 分子機能 | ||||||
| 生物種 | Homo sapiens (ヒト) | ||||||
| 手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.34 Å | ||||||
データ登録者 | Uchikawa, E. / Myasnikov, A. / Dey, R. / Moldoveanu, T. | ||||||
| 資金援助 | 米国, 1件
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引用 | ジャーナル: Mol Cell / 年: 2025タイトル: Structural basis of BAK sequestration by MCL-1 in apoptosis. 著者: Shagun Srivastava / Giridhar Sekar / Adedolapo Ojoawo / Anup Aggarwal / Elisabeth Ferreira / Emiko Uchikawa / Meek Yang / Christy R Grace / Raja Dey / Yi-Lun Lin / Cristina D Guibao / ...著者: Shagun Srivastava / Giridhar Sekar / Adedolapo Ojoawo / Anup Aggarwal / Elisabeth Ferreira / Emiko Uchikawa / Meek Yang / Christy R Grace / Raja Dey / Yi-Lun Lin / Cristina D Guibao / Seetharaman Jayaraman / Somnath Mukherjee / Anthony A Kossiakoff / Bin Dong / Alexander Myasnikov / Tudor Moldoveanu / ![]() 要旨: Apoptosis controls cell fate, ensuring tissue homeostasis and promoting disease when dysregulated. The rate-limiting step in apoptosis is mitochondrial poration by the effector B cell lymphoma 2 (BCL- ...Apoptosis controls cell fate, ensuring tissue homeostasis and promoting disease when dysregulated. The rate-limiting step in apoptosis is mitochondrial poration by the effector B cell lymphoma 2 (BCL-2) family proteins BAK and BAX, which are activated by initiator BCL-2 homology 3 (BH3)-only proteins (e.g., BIM) and inhibited by guardian BCL-2 family proteins (e.g., MCL-1). We integrated structural, biochemical, and pharmacological approaches to characterize the human prosurvival MCL-1:BAK complex assembled from their BCL-2 globular core domains. We reveal a canonical interaction with BAK BH3 bound to the hydrophobic groove of MCL-1 and disordered and highly dynamic BAK regions outside the complex interface. We predict similar conformations of activated effectors in complex with other guardians or effectors. The MCL-1:BAK complex is a major cancer drug target. We show that MCL-1 inhibitors are inefficient in neutralizing the MCL-1:BAK complex, requiring high doses to initiate apoptosis. Our study underscores the need to design superior clinical candidate MCL-1 inhibitors. | ||||||
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 9cph.cif.gz | 359 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9cph.ent.gz | 293.7 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9cph.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| 文書・要旨 | 9cph_validation.pdf.gz | 827.8 KB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 9cph_full_validation.pdf.gz | 845.7 KB | 表示 | |
| XML形式データ | 9cph_validation.xml.gz | 38.2 KB | 表示 | |
| CIF形式データ | 9cph_validation.cif.gz | 56.6 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/cp/9cph ftp://data.pdbj.org/pub/pdb/validation_reports/cp/9cph | HTTPS FTP |
-関連構造データ
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リンク
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集合体
| 登録構造単位 | ![]()
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| 1 |
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要素
| #1: タンパク質 | 分子量: 57152.789 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 発現宿主: ![]() |
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| #2: タンパク質・ペプチド | 分子量: 2366.679 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: BAK1, BAK, BCL2L7, CDN1 / 発現宿主: ![]() |
| #3: 抗体 | 分子量: 24534.371 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 発現宿主: ![]() |
| #4: 抗体 | 分子量: 23109.719 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 発現宿主: ![]() |
| #5: 多糖 | alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose |
| 研究の焦点であるリガンドがあるか | Y |
| Has protein modification | Y |
-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
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| EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
| 構成要素 | 名称: hetero-tetrameric Complex of Sab11M heavy and long chain, MBP_MCL1 fusion protein, and BAK-BH3 タイプ: COMPLEX / Entity ID: #1-#4 / 由来: RECOMBINANT |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: ![]() |
| 緩衝液 | pH: 7 |
| 試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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| 顕微鏡 | モデル: TFS KRIOS |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 500 nm |
| 撮影 | 電子線照射量: 40 e/Å2 フィルム・検出器のモデル: TFS FALCON 4i (4k x 4k) |
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解析
| EMソフトウェア | 名称: PHENIX / バージョン: 1.20.1_4487: / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.34 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 150154 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 拘束条件 |
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ムービー
コントローラー
万見について




Homo sapiens (ヒト)
米国, 1件
引用




PDBj



















FIELD EMISSION GUN