+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6x5c | ||||||||||||
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タイトル | Asymmetric model of CD4-bound B41 HIV-1 Env SOSIP in complex with small molecule GO52 | ||||||||||||
要素 |
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キーワード | VIRAL PROTEIN / HIV-1 / Env / CD4 / receptor-bound state / small molecule / VIRAL PROTEIN-Immune System complex | ||||||||||||
機能・相同性 | 機能・相同性情報 helper T cell enhancement of adaptive immune response / interleukin-16 binding / interleukin-16 receptor activity / maintenance of protein location in cell / T cell selection / MHC class II protein binding / regulation of T cell activation / interleukin-15-mediated signaling pathway / cellular response to granulocyte macrophage colony-stimulating factor stimulus / positive regulation of kinase activity ...helper T cell enhancement of adaptive immune response / interleukin-16 binding / interleukin-16 receptor activity / maintenance of protein location in cell / T cell selection / MHC class II protein binding / regulation of T cell activation / interleukin-15-mediated signaling pathway / cellular response to granulocyte macrophage colony-stimulating factor stimulus / positive regulation of kinase activity / positive regulation of monocyte differentiation / Nef Mediated CD4 Down-regulation / Alpha-defensins / extracellular matrix structural constituent / T cell receptor complex / Other interleukin signaling / enzyme-linked receptor protein signaling pathway / Translocation of ZAP-70 to Immunological synapse / Phosphorylation of CD3 and TCR zeta chains / regulation of calcium ion transport / macrophage differentiation / Generation of second messenger molecules / T cell differentiation / PD-1 signaling / positive regulation of protein kinase activity / Binding and entry of HIV virion / coreceptor activity / cell surface receptor protein tyrosine kinase signaling pathway / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / positive regulation of interleukin-2 production / positive regulation of calcium-mediated signaling / protein tyrosine kinase binding / host cell endosome membrane / T cell activation / Vpu mediated degradation of CD4 / calcium-mediated signaling / clathrin-coated endocytic vesicle membrane / positive regulation of peptidyl-tyrosine phosphorylation / positive regulation of T cell activation / transmembrane signaling receptor activity / Cargo recognition for clathrin-mediated endocytosis / Downstream TCR signaling / MHC class II protein complex binding / Clathrin-mediated endocytosis / signaling receptor activity / virus receptor activity / clathrin-dependent endocytosis of virus by host cell / positive regulation of canonical NF-kappaB signal transduction / defense response to Gram-negative bacterium / adaptive immune response / positive regulation of MAPK cascade / positive regulation of ERK1 and ERK2 cascade / positive regulation of viral entry into host cell / early endosome / cell surface receptor signaling pathway / viral protein processing / cell adhesion / immune response / positive regulation of protein phosphorylation / membrane raft / endoplasmic reticulum lumen / external side of plasma membrane / fusion of virus membrane with host plasma membrane / virus-mediated perturbation of host defense response / fusion of virus membrane with host endosome membrane / lipid binding / viral envelope / endoplasmic reticulum membrane / virion attachment to host cell / apoptotic process / protein kinase binding / host cell plasma membrane / positive regulation of DNA-templated transcription / structural molecule activity / virion membrane / enzyme binding / signal transduction / protein homodimerization activity / zinc ion binding / identical protein binding / plasma membrane 類似検索 - 分子機能 | ||||||||||||
生物種 | Human immunodeficiency virus 1 (ヒト免疫不全ウイルス) 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: 4.04 Å | ||||||||||||
データ登録者 | Ozorowski, G. / Torres, J.L. / Ward, A.B. | ||||||||||||
資金援助 | 米国, 3件
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引用 | ジャーナル: Cell Rep / 年: 2020 タイトル: A Strain-Specific Inhibitor of Receptor-Bound HIV-1 Targets a Pocket near the Fusion Peptide. 著者: Gabriel Ozorowski / Jonathan L Torres / Diogo Santos-Martins / Stefano Forli / Andrew B Ward / 要旨: Disruption of viral fusion represents a viable, albeit under-explored, target for HIV therapeutics. Here, while studying the receptor-bound envelope glycoprotein conformation by cryoelectron ...Disruption of viral fusion represents a viable, albeit under-explored, target for HIV therapeutics. Here, while studying the receptor-bound envelope glycoprotein conformation by cryoelectron microscopy (cryo-EM), we identify a pocket near the base of the trimer containing a bound detergent molecule and perform in silico drug screening by using a library of drug-like and commercially available molecules. After down-selection, we solve cryo-EM structures that validate the binding of two small molecule hits in very similar manners to the predicted binding poses, including interactions with aromatic residues within the fusion peptide. One of the molecules demonstrates low micromolar inhibition of the autologous virus by using a very rare phenylalanine in the fusion peptide and stabilizing the surrounding region. This work demonstrates that small molecules can target the fusion process, providing an additional target for anti-HIV therapeutics, and highlights the need to explore how fusion peptide sequence variations affect receptor-mediated conformational states across diverse HIV strains. #1: ジャーナル: Biorxiv / 年: 2020 タイトル: A strain-specific inhibitor of receptor-bound HIV-1 targets a pocket near the fusion peptide and offers a template for drug design 著者: Ozorowski, G. / Torres, J.L. / Santos-Martins, D. / Forli, S. / Ward, A.B. | ||||||||||||
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 | 6x5c.cif.gz | 392 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6x5c.ent.gz | 307 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6x5c.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 | 6x5c_validation.pdf.gz | 1.8 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6x5c_full_validation.pdf.gz | 1.8 MB | 表示 | |
XML形式データ | 6x5c_validation.xml.gz | 65.5 KB | 表示 | |
CIF形式データ | 6x5c_validation.cif.gz | 96.1 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/x5/6x5c ftp://data.pdbj.org/pub/pdb/validation_reports/x5/6x5c | 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
-Envelope glycoprotein ... , 2種, 6分子 ADEBFG
#1: タンパク質 | 分子量: 58872.902 Da / 分子数: 3 / 変異: A501C, E510R, K511R, 512R, 513R / 由来タイプ: 組換発現 由来: (組換発現) Human immunodeficiency virus 1 (ヒト免疫不全ウイルス) 株: B41 / 遺伝子: env / 細胞株 (発現宿主): HEK293F / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: B3UES2 #2: タンパク質 | 分子量: 17357.824 Da / 分子数: 3 / 変異: I559P, T605C / 由来タイプ: 組換発現 由来: (組換発現) Human immunodeficiency virus 1 (ヒト免疫不全ウイルス) 株: B41 / 遺伝子: env / 細胞株 (発現宿主): HEK293F / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: B3UEZ6 |
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-タンパク質 / 非ポリマー , 2種, 6分子 CIJ
#3: タンパク質 | 分子量: 23039.172 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: CD4 / 細胞株 (発現宿主): HEK293F / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P01730 #7: 化合物 | |
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-糖 , 3種, 27分子
#4: 多糖 | #5: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | #6: 糖 | ChemComp-NAG / |
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-詳細
研究の焦点であるリガンドがあるか | Y |
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Has protein modification | Y |
-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 | 名称: B41 HIV-1 Env SOSIP in complex with soluble CD4, 17b Fab, and small molecule GO52 タイプ: COMPLEX / Entity ID: #1-#3 / 由来: MULTIPLE SOURCES | ||||||||||||||||||||
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分子量 | 値: 0.63 MDa / 実験値: NO | ||||||||||||||||||||
由来(天然) |
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由来(組換発現) | 生物種: Homo sapiens (ヒト) | ||||||||||||||||||||
緩衝液 | pH: 7.4 詳細: Detergent diluted into sample shortly before application to grid | ||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.5 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: 283 K |
-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: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 36000 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): 500 nm / Cs: 2.7 mm / C2レンズ絞り径: 70 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: 11.5 sec. / 電子線照射量: 49 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 実像数: 2654 |
画像スキャン | 動画フレーム数/画像: 46 |
-解析
EMソフトウェア |
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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: 4.04 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 228502 / アルゴリズム: BACK PROJECTION / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 5VN3 Accession code: 5VN3 / Source name: PDB / タイプ: experimental model |