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基本情報
登録情報 | データベース: PDB / ID: 5juy | ||||||
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タイトル | Active human apoptosome with procaspase-9 | ||||||
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![]() | APOPTOSIS / Apaf-1 / programmed cell death / AAA+ ATPase | ||||||
機能・相同性 | ![]() Release of apoptotic factors from the mitochondria / Formation of apoptosome / Activation of caspases through apoptosome-mediated cleavage / Pyroptosis / Regulation of the apoptosome activity / caspase-9 / Transcriptional activation of mitochondrial biogenesis / response to G1 DNA damage checkpoint signaling / caspase complex / Formation of apoptosome ...Release of apoptotic factors from the mitochondria / Formation of apoptosome / Activation of caspases through apoptosome-mediated cleavage / Pyroptosis / Regulation of the apoptosome activity / caspase-9 / Transcriptional activation of mitochondrial biogenesis / response to G1 DNA damage checkpoint signaling / caspase complex / Formation of apoptosome / regulation of apoptotic DNA fragmentation / Detoxification of Reactive Oxygen Species / apoptosome / activation of cysteine-type endopeptidase activity involved in apoptotic process by cytochrome c / TP53 Regulates Metabolic Genes / Cytoprotection by HMOX1 / leukocyte apoptotic process / glial cell apoptotic process / response to cobalt ion / cysteine-type endopeptidase activity involved in apoptotic signaling pathway / Respiratory electron transport / Caspase activation via Dependence Receptors in the absence of ligand / Activation of caspases through apoptosome-mediated cleavage / Regulation of the apoptosome activity / cysteine-type endopeptidase activity involved in apoptotic process / SMAC (DIABLO) binds to IAPs / SMAC(DIABLO)-mediated dissociation of IAP:caspase complexes / AKT phosphorylates targets in the cytosol / mitochondrial electron transport, cytochrome c to oxygen / fibroblast apoptotic process / epithelial cell apoptotic process / platelet formation / mitochondrial electron transport, ubiquinol to cytochrome c / TP53 Regulates Transcription of Caspase Activators and Caspases / Transcriptional Regulation by E2F6 / Constitutive Signaling by AKT1 E17K in Cancer / cysteine-type endopeptidase activator activity involved in apoptotic process / protein maturation / : / intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stress / signal transduction in response to DNA damage / forebrain development / cardiac muscle cell apoptotic process / enzyme activator activity / cellular response to transforming growth factor beta stimulus / heat shock protein binding / intrinsic apoptotic signaling pathway / cellular response to dexamethasone stimulus / response to nutrient / kidney development / neural tube closure / response to ischemia / positive regulation of apoptotic signaling pathway / NOD1/2 Signaling Pathway / mitochondrial intermembrane space / protein processing / ADP binding / SH3 domain binding / activation of cysteine-type endopeptidase activity involved in apoptotic process / intrinsic apoptotic signaling pathway in response to DNA damage / cellular response to UV / positive regulation of neuron apoptotic process / response to estradiol / nervous system development / peptidase activity / regulation of apoptotic process / secretory granule lumen / neuron apoptotic process / ficolin-1-rich granule lumen / response to lipopolysaccharide / electron transfer activity / cell differentiation / response to hypoxia / positive regulation of apoptotic process / cysteine-type endopeptidase activity / nucleotide binding / apoptotic process / DNA damage response / heme binding / Neutrophil degranulation / protein kinase binding / protein-containing complex / mitochondrion / extracellular exosome / extracellular region / ATP binding / identical protein binding / nucleus / metal ion binding / cytoplasm / cytosol 類似検索 - 分子機能 | ||||||
生物種 | ![]() ![]() ![]() | ||||||
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: 4.1 Å | ||||||
![]() | Cheng, T.C. / Hong, C. / Akey, I.V. / Yuan, S. / Akey, C.W. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: A near atomic structure of the active human apoptosome. 著者: Tat Cheung Cheng / Chuan Hong / Ildikó V Akey / Shujun Yuan / Christopher W Akey / ![]() 要旨: In response to cell death signals, an active apoptosome is assembled from Apaf-1 and procaspase-9 (pc-9). Here we report a near atomic structure of the active human apoptosome determined by cryo- ...In response to cell death signals, an active apoptosome is assembled from Apaf-1 and procaspase-9 (pc-9). Here we report a near atomic structure of the active human apoptosome determined by cryo-electron microscopy. The resulting model gives insights into cytochrome c binding, nucleotide exchange and conformational changes that drive assembly. During activation an acentric disk is formed on the central hub of the apoptosome. This disk contains four Apaf-1/pc-9 CARD pairs arranged in a shallow spiral with the fourth pc-9 CARD at lower occupancy. On average, Apaf-1 CARDs recruit 3 to 5 pc-9 molecules to the apoptosome and one catalytic domain may be parked on the hub, when an odd number of zymogens are bound. This suggests a stoichiometry of one or at most, two pc-9 dimers per active apoptosome. Thus, our structure provides a molecular framework to understand the role of the apoptosome in programmed cell death and disease. | ||||||
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構造の表示
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構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 1.6 MB | 表示 | ![]() |
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PDB形式 | ![]() | 1.3 MB | 表示 | ![]() |
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-検証レポート
文書・要旨 | ![]() | 1.8 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 2 MB | 表示 | |
XML形式データ | ![]() | 249.2 KB | 表示 | |
CIF形式データ | ![]() | 374.2 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | 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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要素
#1: タンパク質 | 分子量: 142023.672 Da / 分子数: 7 / 由来タイプ: 組換発現 / 詳細: without N-terminal CARDs / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: O14727 #2: タンパク質 | 分子量: 11595.392 Da / 分子数: 7 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() #3: タンパク質 | 分子量: 11140.723 Da / 分子数: 4 / Fragment: N-terminal caspase recognition domain / 由来タイプ: 組換発現 詳細: N-terminal caspase recognition domain (CARD) of procaspase-9 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P55211, caspase-9 #4: 化合物 | ChemComp-DTP / #5: 化合物 | ChemComp-HEC / |
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-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: Active complex of Apaf-1, cytochrome c and pro-caspase 9 タイプ: COMPLEX 詳細: Complex stoichiometry: 4 full length Apaf-1 molecules with ordered N-terminal CARDs, 3 truncated Apaf-1 molecules without CARDs, 7 cytochrome c molecules and 4 N-terminal CARDs from procaspase-9 Entity ID: #1-#4 / 由来: RECOMBINANT | |||||||||||||||||||||||||||||||||||
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分子量 | 値: 1.3 MDa / 実験値: NO | |||||||||||||||||||||||||||||||||||
由来(天然) | 生物種: ![]() | |||||||||||||||||||||||||||||||||||
由来(組換発現) | 生物種: ![]() ![]() プラスミド: pFast-Bac | |||||||||||||||||||||||||||||||||||
緩衝液 | pH: 7.5 / 詳細: Buffer A | |||||||||||||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 4 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | |||||||||||||||||||||||||||||||||||
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: C-flat-1.2/1.3 | |||||||||||||||||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK III / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 293 K |
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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: FEI TITAN KRIOS 詳細: data collected with a Cs aberration corrector and a GIF energy filter with a slit width of 20 eV. |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 81000 X / 最大 デフォーカス(公称値): 2400 nm / 最小 デフォーカス(公称値): 1500 nm / Cs: 0.01 mm / C2レンズ絞り径: 100 µm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 0.3 sec. / 電子線照射量: 1.8 e/Å2 / 検出モード: SUPER-RESOLUTION フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 撮影したグリッド数: 1 / 実像数: 1991 |
電子光学装置 | エネルギーフィルター名称: GIF |
画像スキャン | 横: 7676 / 縦: 7420 / 動画フレーム数/画像: 23 / 利用したフレーム数/画像: 2-23 |
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解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 134970 | ||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C7 (7回回転対称) | ||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 4.1 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 92867 / アルゴリズム: FOURIER SPACE / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: FLEXIBLE FIT / 空間: REAL 詳細: Initial rigid body fitting with Chimera with a previously published starting model (PDB 3J2T), molecular dynamics flexible fitting with MDFF and real space density refinement with Phenix |