+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6zd0 | ||||||
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タイトル | Disulfide-locked early prepore intermedilysin-CD59 | ||||||
要素 |
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キーワード | TOXIN / early prepore / membrane-bound / oligomer | ||||||
機能・相同性 | 機能・相同性情報 negative regulation of activation of membrane attack complex / complement binding / regulation of complement-dependent cytotoxicity / regulation of complement activation / Cargo concentration in the ER / COPII-mediated vesicle transport / cholesterol binding / tertiary granule membrane / COPI-mediated anterograde transport / specific granule membrane ...negative regulation of activation of membrane attack complex / complement binding / regulation of complement-dependent cytotoxicity / regulation of complement activation / Cargo concentration in the ER / COPII-mediated vesicle transport / cholesterol binding / tertiary granule membrane / COPI-mediated anterograde transport / specific granule membrane / transport vesicle / endoplasmic reticulum-Golgi intermediate compartment membrane / Regulation of Complement cascade / ER to Golgi transport vesicle membrane / blood coagulation / toxin activity / vesicle / killing of cells of another organism / cell surface receptor signaling pathway / Golgi membrane / external side of plasma membrane / focal adhesion / Neutrophil degranulation / endoplasmic reticulum membrane / host cell plasma membrane / cell surface / extracellular space / extracellular exosome / extracellular region / membrane / metal ion binding / plasma membrane 類似検索 - 分子機能 | ||||||
生物種 | Streptococcus intermedius (バクテリア) 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: 4.6 Å | ||||||
データ登録者 | Shah, N.R. / Bubeck, D. | ||||||
資金援助 | 英国, 1件
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引用 | ジャーナル: Nat Commun / 年: 2020 タイトル: Structural basis for tuning activity and membrane specificity of bacterial cytolysins. 著者: Nita R Shah / Tomas B Voisin / Edward S Parsons / Courtney M Boyd / Bart W Hoogenboom / Doryen Bubeck / 要旨: Cholesterol-dependent cytolysins (CDCs) are pore-forming proteins that serve as major virulence factors for pathogenic bacteria. They target eukaryotic cells using different mechanisms, but all ...Cholesterol-dependent cytolysins (CDCs) are pore-forming proteins that serve as major virulence factors for pathogenic bacteria. They target eukaryotic cells using different mechanisms, but all require the presence of cholesterol to pierce lipid bilayers. How CDCs use cholesterol to selectively lyse cells is essential for understanding virulence strategies of several pathogenic bacteria, and for repurposing CDCs to kill new cellular targets. Here we address that question by trapping an early state of pore formation for the CDC intermedilysin, bound to the human immune receptor CD59 in a nanodisc model membrane. Our cryo electron microscopy map reveals structural transitions required for oligomerization, which include the lateral movement of a key amphipathic helix. We demonstrate that the charge of this helix is crucial for tuning lytic activity of CDCs. Furthermore, we discover modifications that overcome the requirement of cholesterol for membrane rupture, which may facilitate engineering the target-cell specificity of pore-forming proteins. | ||||||
履歴 |
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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 | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 6zd0.cif.gz | 253.5 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6zd0.ent.gz | 175.5 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6zd0.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 | 6zd0_validation.pdf.gz | 978.4 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6zd0_full_validation.pdf.gz | 986.6 KB | 表示 | |
XML形式データ | 6zd0_validation.xml.gz | 41.3 KB | 表示 | |
CIF形式データ | 6zd0_validation.cif.gz | 65.9 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/zd/6zd0 ftp://data.pdbj.org/pub/pdb/validation_reports/zd/6zd0 | HTTPS FTP |
-関連構造データ
-リンク
-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: 59100.953 Da / 分子数: 3 / 変異: I104C G244C / 由来タイプ: 組換発現 由来: (組換発現) Streptococcus intermedius (バクテリア) 遺伝子: ily / プラスミド: pTricHis / 詳細 (発現宿主): IPTG-inducable promoter / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / 参照: UniProt: Q9LCB8 #2: タンパク質 | 分子量: 9204.445 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CD59, MIC11, MIN1, MIN2, MIN3, MSK21 / 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: P13987 |
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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 |
-試料調製
構成要素 |
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分子量 |
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由来(天然) |
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由来(組換発現) |
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緩衝液 | pH: 7.5 | ||||||||||||||||||||||||||||
緩衝液成分 |
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試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||||||||||
試料支持 | 詳細: Grids were glow discharged before application of graphene oxide, then left to dry for 1 hour before use. グリッドの材料: COPPER / グリッドのサイズ: 400 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 | ||||||||||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK III / 凍結剤: ETHANE / 湿度: 95 % / 凍結前の試料温度: 294 K / 詳細: Wait time of 60 s, blot time 2.5 s, blot force 3 |
-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: Pixel size 1.4 A |
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): 3100 nm / 最小 デフォーカス(公称値): 1900 nm / Cs: 2.7 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: 1 sec. / 電子線照射量: 66 e/Å2 / 検出モード: INTEGRATING フィルム・検出器のモデル: FEI FALCON III (4k x 4k) 詳細: Some images were collected at a 30 degree tilt. Images were collected in movie mode at 39 frames per second. |
-解析
EMソフトウェア |
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CTF補正 | タイプ: NONE | ||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 4.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 51041 / クラス平均像の数: 2 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT / 空間: REAL 詳細: Model of ILY-CD59 was fit and refined into the central subunit density. A combination of rigid body fitting and global minimization with secondary structure restraints was used to fit and ...詳細: Model of ILY-CD59 was fit and refined into the central subunit density. A combination of rigid body fitting and global minimization with secondary structure restraints was used to fit and refine the central subunit model. Then the central subunit model was rigid body fit as one body into the neighbouring subunits to generate a 3 subunit oligomer model. | ||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 4BIK Accession code: 4BIK / Source name: PDB / タイプ: experimental model |