+
データを開く
-
基本情報
| 登録情報 | データベース: PDB / ID: 9og6 | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| タイトル | Apo SARS-COV-2-6P-MUT7 S PROTEIN closed conformation | ||||||||||||||||||||||||
要素 | Spike glycoprotein | ||||||||||||||||||||||||
キーワード | VIRAL PROTEIN / SARS-COV-2 / S protein | ||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報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 ...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 | ![]() | ||||||||||||||||||||||||
| 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: 3.14 Å | ||||||||||||||||||||||||
データ登録者 | Niu, L. / Chandravanshi, M. / Tolbert, W.D. / Pazgier, M. | ||||||||||||||||||||||||
| 資金援助 | カナダ, 1件
| ||||||||||||||||||||||||
引用 | ジャーナル: J Virol / 年: 2025タイトル: Optimization of VE607 to generate analogs with improved neutralization activities against SARS-CoV-2 variants. 著者: Shilei Ding / Derek Yang / Irfan Ullah / Ling Niu / Matthew Unger / Marco A Díaz-Salinas / Monika Chandravanshi / Fei Zhou / Guillaume Beaudoin-Bussières / Mehdi Benlarbi / William D ...著者: Shilei Ding / Derek Yang / Irfan Ullah / Ling Niu / Matthew Unger / Marco A Díaz-Salinas / Monika Chandravanshi / Fei Zhou / Guillaume Beaudoin-Bussières / Mehdi Benlarbi / William D Tolbert / Keon-Woong Yoon / Ruixue Xu / Geneviève Laroche / Fleur Gaudette / Abraham J Morton / Zabrina C Lang / Anna Son / Cameron Abrams / Marceline Côté / Amos B Smith / Rick K Huang / Doreen Matthies / James B Munro / Marzena Pazgier / Pradeep D Uchil / Andrés Finzi / ![]() 要旨: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection remains a threat to human health, particularly among immunocompromised and elderly individuals, given their heightened ...Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection remains a threat to human health, particularly among immunocompromised and elderly individuals, given their heightened vulnerability to coronavirus disease 2019 (COVID-19)-associated morbidity and mortality. Recently, omicron subvariants such as KP.3.1.1 and XEC have emerged with an enhanced ability to evade humoral immunity. The development of new strategies against these variants of concern remains an intense area of research. The small molecule VE607 is an entry inhibitor that targets the Spike glycoprotein and delays virus spread . To improve the potency of this new class of SARS-CoV-2 entry inhibitors, we generated and characterized VE607 analogs and identified candidates with enhanced activity against variants, including KP.3.1.1 and XEC. Promising analogs exhibited higher inhibitory potency than the original compound and stabilized the receptor-binding domain in its "up" conformation. Among these, DY-III-281 also reduced viral burden and delayed death in SARS-CoV-2-challenged K18-hACE2 transgenic mice. Furthermore, combining DY-III-281 with a non-neutralizing antibody engineered for Fc-enhanced functions exhibited an additive effect in reducing SARS-CoV-2-induced disease burden in mice. Our findings support the continued development of small-molecule entry inhibitors, alone or in combination with antibody-based therapies, as a promising strategy to counteract emerging SARS-CoV-2 variants. IMPORTANCE: Mutations in the Spike glycoprotein drive viral evolution and confer resistance to current vaccines and some therapeutic interventions against severe acute respiratory syndrome ...IMPORTANCE: Mutations in the Spike glycoprotein drive viral evolution and confer resistance to current vaccines and some therapeutic interventions against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Here, we report new analogs of the SARS-CoV-2 small-molecule entry inhibitor VE607. These analogs exhibited improved potency against emerging SARS-CoV-2 variants, including KP.3.1.1 and XEC. One analog, DY-III-281, delayed viral replication in SARS-CoV-2-challenged K18-hACE2 transgenic mice, suggesting that small-molecule compounds targeting viral entry might be useful in fighting evolving SARS-CoV-2 variants. | ||||||||||||||||||||||||
| 履歴 |
|
-
構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
|---|
-
ダウンロードとリンク
-
ダウンロード
| PDBx/mmCIF形式 | 9og6.cif.gz | 645.1 KB | 表示 | PDBx/mmCIF形式 |
|---|---|---|---|---|
| PDB形式 | pdb9og6.ent.gz | 523.4 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9og6.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/og/9og6 ftp://data.pdbj.org/pub/pdb/validation_reports/og/9og6 | HTTPS FTP |
|---|
-関連構造データ
-
リンク
-
集合体
| 登録構造単位 | ![]()
|
|---|---|
| 1 |
|
-
要素
| #1: タンパク質 | 分子量: 141328.359 Da / 分子数: 3 変異: R682G, R683S, R685S, V705C, F817P, T883C, A892P, A899P, A942P, K986P, V987P 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: S, 2 / 細胞株 (発現宿主): HEK 293 GnTI- / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P0DTC2#2: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #3: 多糖 | beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #4: 多糖 | beta-D-mannopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | #5: 糖 | ChemComp-NAG / 研究の焦点であるリガンドがあるか | N | Has protein modification | Y | |
|---|
-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
|---|---|
| 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 | 名称: SARS-COV-2-6P-MUT7 S PROTEIN / タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
|---|---|
| 由来(天然) | 生物種: ![]() |
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) / 細胞: HEK 293 GnTI- |
| 緩衝液 | pH: 7.2 |
| 試料 | 濃度: 1.5 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: 400 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 |
| 急速凍結 | 装置: LEICA PLUNGER / 凍結剤: ETHANE / 湿度: 95 % / 凍結前の試料温度: 277 K / 詳細: blot time of 5 s |
-
電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
|---|---|
| 顕微鏡 | モデル: TFS 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 / 最大 デフォーカス(公称値): 2700 nm / 最小 デフォーカス(公称値): 500 nm |
| 試料ホルダ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
| 撮影 | 電子線照射量: 54.2 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 撮影したグリッド数: 1 / 実像数: 8808 |
-
解析
| EMソフトウェア |
| ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.14 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 340310 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: RIGID BODY FIT | ||||||||||||||||||||||||||||
| 原子モデル構築 | PDB-ID: 7RU1 Accession code: 7RU1 / Source name: PDB / タイプ: experimental model | ||||||||||||||||||||||||||||
| 精密化 | 最高解像度: 3.14 Å 立体化学のターゲット値: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||||||
| 拘束条件 |
|
ムービー
コントローラー
万見について






カナダ, 1件
引用







PDBj




Homo sapiens (ヒト)

FIELD EMISSION GUN
