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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: 8h3e | |||||||||||||||||||||||||||||||||
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| タイトル | Complex structure of a small molecule (SPC-14) bound SARS-CoV-2 spike protein, closed state | |||||||||||||||||||||||||||||||||
要素 | Spike glycoprotein,Fibritin | |||||||||||||||||||||||||||||||||
キーワード | VIRAL PROTEIN / SARS-CoV-2 / spike protein / complex / small molecule / closed | |||||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報virion component / symbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular region / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion ...virion component / symbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular region / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / positive regulation of viral entry into host cell / membrane fusion / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / Attachment and Entry / entry receptor-mediated virion attachment to host cell / receptor-mediated virion attachment to host cell / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / endocytosis involved in viral entry into host cell / receptor ligand activity / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / symbiont entry into host cell / virion attachment to host cell / host cell plasma membrane / SARS-CoV-2 activates/modulates innate and adaptive immune responses / virion membrane / membrane / identical protein binding / plasma membrane 類似検索 - 分子機能 | |||||||||||||||||||||||||||||||||
| 生物種 | ![]() Tequatrovirus T4 (ウイルス) | |||||||||||||||||||||||||||||||||
| 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: 3.06 Å | |||||||||||||||||||||||||||||||||
データ登録者 | Meng, F. / Wang, Q. / Xie, Y. / Ni, X. / Huang, N. | |||||||||||||||||||||||||||||||||
| 資金援助 | 中国, 1件
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引用 | ジャーナル: ACS Cent Sci / 年: 2023タイトル: In Silico Discovery of Small Molecule Modulators Targeting the Achilles' Heel of SARS-CoV-2 Spike Protein. 著者: Qing Wang / Fanhao Meng / Yuting Xie / Wei Wang / Yumin Meng / Linjie Li / Tao Liu / Jianxun Qi / Xiaodan Ni / Sanduo Zheng / Jianhui Huang / Niu Huang / ![]() 要旨: The spike protein of SARS-CoV-2 has been a promising target for developing vaccines and therapeutics due to its crucial role in the viral entry process. Previously reported cryogenic electron ...The spike protein of SARS-CoV-2 has been a promising target for developing vaccines and therapeutics due to its crucial role in the viral entry process. Previously reported cryogenic electron microscopy (cryo-EM) structures have revealed that free fatty acids (FFA) bind with SARS-CoV-2 spike protein, stabilizing its closed conformation and reducing its interaction with the host cell target in vitro. Inspired by these, we utilized a structure-based virtual screening approach against the conserved FFA-binding pocket to identify small molecule modulators of SARS-CoV-2 spike protein, which helped us identify six hits with micromolar binding affinities. Further evaluation of their commercially available and synthesized analogs enabled us to discover a series of compounds with better binding affinities and solubilities. Notably, our identified compounds exhibited similar binding affinities against the spike proteins of the prototypic SARS-CoV-2 and a currently circulating Omicron BA.4 variant. Furthermore, the cryo-EM structure of the compound SPC-14 bound spike revealed that SPC-14 could shift the conformational equilibrium of the spike protein toward the closed conformation, which is human ACE2 (hACE2) inaccessible. Our identified small molecule modulators targeting the conserved FFA-binding pocket could serve as the starting point for the future development of broad-spectrum COVID-19 intervention treatments. | |||||||||||||||||||||||||||||||||
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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 | 8h3e.cif.gz | 648.3 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb8h3e.ent.gz | 527.7 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 8h3e.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/h3/8h3e ftp://data.pdbj.org/pub/pdb/validation_reports/h3/8h3e | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 34465MC ![]() 8h3dC 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 ( |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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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: 141338.359 Da / 分子数: 3 / 断片: SARS-CoV-2 spike protein,SARS-CoV-2 spike protein / 変異: R682S,R683G,R685G,K986P,V987P / 由来タイプ: 組換発現 由来: (組換発現) ![]() Tequatrovirus T4 (ウイルス)遺伝子: S, 2, wac / プラスミド: pcDNA3 / 発現宿主: Homo sapiens (ヒト) / 株 (発現宿主): Expi293F / 参照: UniProt: P0DTC2, UniProt: P10104#2: 化合物 | #3: 糖 | ChemComp-NAG / 研究の焦点であるリガンドがあるか | Y | Has protein modification | Y | |
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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: Complex of SARS-CoV-2 spike protein and a small molecule (SPC-14) タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT | ||||||||||||
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| 由来(天然) |
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| 由来(組換発現) | 生物種: Homo sapiens (ヒト) / 株: Expi293F / プラスミド: pcDNA3 | ||||||||||||
| 緩衝液 | pH: 8 | ||||||||||||
| 緩衝液成分 | 濃度: 20 mM / 名称: HEPES / 式: C8H18N2O4S | ||||||||||||
| 試料 | 濃度: 1.53 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: GOLD / 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 IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 281 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 |
| 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 / 倍率(公称値): 96000 X / 倍率(補正後): 96000 X / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 1000 nm / Calibrated defocus min: 1000 nm / 最大 デフォーカス(補正後): 2000 nm / Cs: 2.7 mm |
| 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 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) 撮影したグリッド数: 2 / 実像数: 4841 |
| 画像スキャン | 横: 4096 / 縦: 4096 |
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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 | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.06 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 59187 / クラス平均像の数: 1 / 対称性のタイプ: POINT |
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万見について






中国, 1件
引用


PDBj





gel filtration
Homo sapiens (ヒト)


