+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7x7n | |||||||||
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タイトル | 3D model of the 3-RBD up single trimeric spike protein of SARS-CoV2 in the presence of synthetic peptide SIH-5. | |||||||||
要素 |
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キーワード | VIRAL PROTEIN / spike protein / SARS-CoV2 / complex | |||||||||
機能・相同性 | 機能・相同性情報 Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell ...Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / receptor-mediated endocytosis of virus by host cell / membrane fusion / Attachment and Entry / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / receptor ligand activity / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / SARS-CoV-2 activates/modulates innate and adaptive immune responses / host cell plasma membrane / virion membrane / identical protein binding / membrane / plasma membrane 類似検索 - 分子機能 | |||||||||
生物種 | Severe acute respiratory syndrome coronavirus 2 (ウイルス) synthetic construct (人工物) | |||||||||
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: 4.47 Å | |||||||||
データ登録者 | Khatri, B. / Pramanick, I. / Malladi, S.K. / Rajmani, R.S. / Kumar, S. / Ghosh, P. / Sengupta, N. / Rahisuddin, R. / Kumaran, S. / Ringe, R.P. ...Khatri, B. / Pramanick, I. / Malladi, S.K. / Rajmani, R.S. / Kumar, S. / Ghosh, P. / Sengupta, N. / Rahisuddin, R. / Kumaran, S. / Ringe, R.P. / Varadarajan, R. / Dutta, S. / Chatterjee, J. | |||||||||
資金援助 | インド, 2件
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引用 | ジャーナル: Nat Chem Biol / 年: 2022 タイトル: A dimeric proteomimetic prevents SARS-CoV-2 infection by dimerizing the spike protein. 著者: Bhavesh Khatri / Ishika Pramanick / Sameer Kumar Malladi / Raju S Rajmani / Sahil Kumar / Pritha Ghosh / Nayanika Sengupta / R Rahisuddin / Narender Kumar / S Kumaran / Rajesh P Ringe / ...著者: Bhavesh Khatri / Ishika Pramanick / Sameer Kumar Malladi / Raju S Rajmani / Sahil Kumar / Pritha Ghosh / Nayanika Sengupta / R Rahisuddin / Narender Kumar / S Kumaran / Rajesh P Ringe / Raghavan Varadarajan / Somnath Dutta / Jayanta Chatterjee / 要旨: Protein tertiary structure mimetics are valuable tools to target large protein-protein interaction interfaces. Here, we demonstrate a strategy for designing dimeric helix-hairpin motifs from a ...Protein tertiary structure mimetics are valuable tools to target large protein-protein interaction interfaces. Here, we demonstrate a strategy for designing dimeric helix-hairpin motifs from a previously reported three-helix-bundle miniprotein that targets the receptor-binding domain (RBD) of severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2). Through truncation of the third helix and optimization of the interhelical loop residues of the miniprotein, we developed a thermostable dimeric helix-hairpin. The dimeric four-helix bundle competes with the human angiotensin-converting enzyme 2 (ACE2) in binding to RBD with 2:2 stoichiometry. Cryogenic-electron microscopy revealed the formation of dimeric spike ectodomain trimer by the four-helix bundle, where all the three RBDs from either spike protein are attached head-to-head in an open conformation, revealing a novel mechanism for virus neutralization. The proteomimetic protects hamsters from high dose viral challenge with replicative SARS-CoV-2 viruses, demonstrating the promise of this class of peptides that inhibit protein-protein interaction through target dimerization. | |||||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7x7n.cif.gz | 595.3 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7x7n.ent.gz | 488.1 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7x7n.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 | 7x7n_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7x7n_full_validation.pdf.gz | 1.4 MB | 表示 | |
XML形式データ | 7x7n_validation.xml.gz | 113.5 KB | 表示 | |
CIF形式データ | 7x7n_validation.cif.gz | 169.4 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/x7/7x7n ftp://data.pdbj.org/pub/pdb/validation_reports/x7/7x7n | HTTPS FTP |
-関連構造データ
関連構造データ | 33042MC M: このデータのモデリングに利用したマップデータ 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
-集合体
登録構造単位 |
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-要素
#1: タンパク質 | 分子量: 142399.375 Da / 分子数: 3 / 変異: R682G, R683S, R685S, K986P, V987P / 由来タイプ: 組換発現 詳細: NCBI Reference Sequence: YP_009724390.1 In our deposited construct, spike protein is composed of 1-1208 amino acid residues, which have the following mutations R682G, R683S, R685S, K986P, ...詳細: NCBI Reference Sequence: YP_009724390.1 In our deposited construct, spike protein is composed of 1-1208 amino acid residues, which have the following mutations R682G, R683S, R685S, K986P, V987P. At the C terminus, there is Foldon oligomerization domain, HRV3C protease site, 6 His, Strep-tag II, linker, Strep-tag II, stop codon. 由来: (組換発現) Severe acute respiratory syndrome coronavirus 2 (ウイルス) 遺伝子: S, 2 細胞株 (発現宿主): Mammalian expression Expi293F cells 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P0DTC2 #2: タンパク質・ペプチド | 分子量: 4655.456 Da / 分子数: 6 / 由来タイプ: 合成 / 由来: (合成) synthetic construct (人工物) #3: 糖 | ChemComp-NAG / 研究の焦点であるリガンドがあるか | N | |
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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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由来(天然) | 生物種: Severe acute respiratory syndrome coronavirus (SARS コロナウイルス) | ||||||||||||||||||||||||
由来(組換発現) | 生物種: Homo sapiens (ヒト) | ||||||||||||||||||||||||
緩衝液 | pH: 7.4 | ||||||||||||||||||||||||
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 |
-電子顕微鏡撮影
実験機器 | モデル: Talos Arctica / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TALOS ARCTICA |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 200 kV / 照射モード: OTHER |
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): 750 nm |
撮影 | 電子線照射量: 80 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
-解析
ソフトウェア | 名称: PHENIX / バージョン: 1.17.1_3660: / 分類: 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: 4.47 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 101296 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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