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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: EMDB / ID: EMD-2870 | |||||||||
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| タイトル | Cryo-EM structure of the multimeric complex between Dark and Dronc-CARD. | |||||||||
マップデータ | Reconstruction of the multimeric complex between Dark and Dronc-CARD. | |||||||||
試料 |
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キーワード | Cryo-EM / apoptosome / single particle analysis | |||||||||
| 機能・相同性 | 機能・相同性情報hemocyte development / nurse cell apoptotic process / TP53 Regulates Transcription of Caspase Activators and Caspases / negative regulation of humoral immune response / positive regulation of glial cell apoptotic process / head involution / Formation of apoptosome / salivary gland histolysis / melanization defense response / caspase-9 ...hemocyte development / nurse cell apoptotic process / TP53 Regulates Transcription of Caspase Activators and Caspases / negative regulation of humoral immune response / positive regulation of glial cell apoptotic process / head involution / Formation of apoptosome / salivary gland histolysis / melanization defense response / caspase-9 / sarcosine catabolic process / Activation of caspases through apoptosome-mediated cleavage / Regulation of the apoptosome activity / compound eye retinal cell programmed cell death / central nervous system formation / positive regulation of apoptotic process involved in development / metamorphosis / compound eye development / chaeta development / sperm individualization / apoptosome / autophagic cell death / programmed cell death involved in cell development / Neutrophil degranulation / S-adenosylmethionine cycle / CARD domain binding / programmed necrotic cell death / programmed cell death / zymogen activation / triglyceride homeostasis / execution phase of apoptosis / response to starvation / neuron remodeling / dendrite morphogenesis / protein autoprocessing / ectopic germ cell programmed cell death / central nervous system development / response to gamma radiation / determination of adult lifespan / positive regulation of apoptotic signaling pathway / neuron cellular homeostasis / ADP binding / negative regulation of cell population proliferation / cysteine-type endopeptidase activity / apoptotic process / structural molecule activity / protein homodimerization activity / ATP binding / identical protein binding / nucleus / plasma membrane / cytoplasm 類似検索 - 分子機能 | |||||||||
| 生物種 | ![]() | |||||||||
| 手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / ネガティブ染色法 / 解像度: 4.1 Å | |||||||||
データ登録者 | Pang YX / Bai XC / Hao Q / Yan CY / Chen ZQ / Wang JW / Scheres SHW / Shi YG | |||||||||
引用 | ジャーナル: Genes Dev / 年: 2015タイトル: Structure of the apoptosome: mechanistic insights into activation of an initiator caspase from Drosophila. 著者: Yuxuan Pang / Xiao-chen Bai / Chuangye Yan / Qi Hao / Zheqin Chen / Jia-Wei Wang / Sjors H W Scheres / Yigong Shi / ![]() 要旨: Apoptosis is executed by a cascade of caspase activation. The autocatalytic activation of an initiator caspase, exemplified by caspase-9 in mammals or its ortholog, Dronc, in fruit flies, is ...Apoptosis is executed by a cascade of caspase activation. The autocatalytic activation of an initiator caspase, exemplified by caspase-9 in mammals or its ortholog, Dronc, in fruit flies, is facilitated by a multimeric adaptor complex known as the apoptosome. The underlying mechanism by which caspase-9 or Dronc is activated by the apoptosome remains unknown. Here we report the electron cryomicroscopic (cryo-EM) structure of the intact apoptosome from Drosophila melanogaster at 4.0 Å resolution. Analysis of the Drosophila apoptosome, which comprises 16 molecules of the Dark protein (Apaf-1 ortholog), reveals molecular determinants that support the assembly of the 2.5-MDa complex. In the absence of dATP or ATP, Dronc zymogen potently induces formation of the Dark apoptosome, within which Dronc is efficiently activated. At 4.1 Å resolution, the cryo-EM structure of the Dark apoptosome bound to the caspase recruitment domain (CARD) of Dronc (Dronc-CARD) reveals two stacked rings of Dronc-CARD that are sandwiched between two octameric rings of the Dark protein. The specific interactions between Dronc-CARD and both the CARD and the WD40 repeats of a nearby Dark protomer are indispensable for Dronc activation. These findings reveal important mechanistic insights into the activation of initiator caspase by the apoptosome. | |||||||||
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構造の表示
| ムービー |
ムービービューア |
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| 構造ビューア | EMマップ: SurfView Molmil Jmol/JSmol |
| 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_2870.map.gz | 115.3 MB | EMDBマップデータ形式 | |
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| ヘッダ (付随情報) | emd-2870-v30.xml emd-2870.xml | 10.7 KB 10.7 KB | 表示 表示 | EMDBヘッダ |
| 画像 | EMD_2870.png | 239.9 KB | ||
| アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-2870 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-2870 | HTTPS FTP |
-検証レポート
| 文書・要旨 | emd_2870_validation.pdf.gz | 403.9 KB | 表示 | EMDB検証レポート |
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| 文書・詳細版 | emd_2870_full_validation.pdf.gz | 403.5 KB | 表示 | |
| XML形式データ | emd_2870_validation.xml.gz | 6.4 KB | 表示 | |
| アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-2870 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-2870 | HTTPS FTP |
-関連構造データ
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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 |
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マップ
| ファイル | ダウンロード / ファイル: emd_2870.map.gz / 形式: CCP4 / 大きさ: 122.1 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| 注釈 | Reconstruction of the multimeric complex between Dark and Dronc-CARD. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ボクセルのサイズ | X=Y=Z: 1.34 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 密度 |
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| 対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
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試料の構成要素
-全体 : Dark apoptosome in complex with Dronc-CARD.
| 全体 | 名称: Dark apoptosome in complex with Dronc-CARD. |
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| 要素 |
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-超分子 #1000: Dark apoptosome in complex with Dronc-CARD.
| 超分子 | 名称: Dark apoptosome in complex with Dronc-CARD. / タイプ: sample / ID: 1000 / 集合状態: homo 16 mers / Number unique components: 2 |
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| 分子量 | 実験値: 3 MDa / 理論値: 3 MDa |
-分子 #1: Dark apoptosome
| 分子 | 名称: Dark apoptosome / タイプ: protein_or_peptide / ID: 1 / 集合状態: 16 mers / 組換発現: Yes |
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| 由来(天然) | 生物種: ![]() 別称: fruit fly / 細胞: Hi-5 insect cells |
| 分子量 | 実験値: 3 MDa / 理論値: 3 MDa |
| 組換発現 | 生物種: ![]() 組換細胞: Hi-5 insect cells / 組換プラスミド: pFastBac1 |
-分子 #2: Dronc-CARD
| 分子 | 名称: Dronc-CARD / タイプ: protein_or_peptide / ID: 2 / コピー数: 1 / 組換発現: No |
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| 由来(天然) | 生物種: ![]() 別称: fruit fly |
-実験情報
-構造解析
| 手法 | ネガティブ染色法, 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 |
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試料調製
| 濃度 | 0.15 mg/mL |
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| 緩衝液 | pH: 8 / 詳細: 25mM Tris, 150mM NaCl, 5mM dithiothreitol |
| 染色 | タイプ: NEGATIVE 詳細: Grids were blotted for 2 seconds and flash frozen in liquid ethane using an FEI Vitrobot. |
| グリッド | 詳細: Samples were placed on glow-discharged holey carbon grids (Quantifoil CuR2/2), on which a home-made continuous carbon film had previously been deposited. |
| 凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 85 K / 装置: FEI VITROBOT MARK II / 手法: Blot for 2 seconds before plunging |
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電子顕微鏡法
| 顕微鏡 | FEI POLARA 300 |
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| 温度 | 最低: 80 K / 最高: 90 K / 平均: 85 K |
| 日付 | 2014年1月8日 |
| 撮影 | カテゴリ: CCD フィルム・検出器のモデル: FEI FALCON II (4k x 4k) デジタル化 - サンプリング間隔: 14 µm / 実像数: 1234 / 平均電子線量: 28 e/Å2 詳細: 16 video frames were recorded in 1s by FalconII detector. |
| 電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
| 電子光学系 | 倍率(補正後): 104748 / 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2 mm / 最大 デフォーカス(公称値): 6.4 µm / 最小 デフォーカス(公称値): 1.4 µm / 倍率(公称値): 78000 |
| 試料ステージ | 試料ホルダーモデル: GATAN LIQUID NITROGEN |
| 実験機器 | ![]() モデル: Tecnai Polara / 画像提供: FEI Company |
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画像解析
| CTF補正 | 詳細: Each particle |
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| 最終 再構成 | 想定した対称性 - 点群: D8 (2回x8回 2面回転対称) 解像度のタイプ: BY AUTHOR / 解像度: 4.1 Å / 解像度の算出法: OTHER / ソフトウェア - 名称: CTFFIND3, RELION 詳細: To correct for beam-induced movements, the 16 video frames for each micrograph were first aligned using whole-image motion correction. Second, particle based beam-induced movement correction ...詳細: To correct for beam-induced movements, the 16 video frames for each micrograph were first aligned using whole-image motion correction. Second, particle based beam-induced movement correction was performed using statistical movie processing in RELION. 使用した粒子像数: 11359 |
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