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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: 7t0o | ||||||
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| タイトル | cryoEM reconstruction of the HIV gp140 in complex with the extracellular domains of CD4 and the adnectin domain of Combinectin. The gp140 and CD4 coordinates from entry 6EDU were rigid body fitted to the EM map along withe the crystal structure of CD4+adnectin | ||||||
要素 |
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キーワード | ANTIVIRAL PROTEIN / Inhibitor / HIV gp140 / CD4 / adnectin | ||||||
| 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 / cellular response to ionomycin / response to methamphetamine hydrochloride / T cell selection / MHC class II protein binding / interleukin-15-mediated signaling pathway / cellular response to granulocyte macrophage colony-stimulating factor stimulus ...helper T cell enhancement of adaptive immune response / interleukin-16 binding / interleukin-16 receptor activity / maintenance of protein location in cell / cellular response to ionomycin / response to methamphetamine hydrochloride / T cell selection / MHC class II protein binding / interleukin-15-mediated signaling pathway / cellular response to granulocyte macrophage colony-stimulating factor stimulus / positive regulation of monocyte differentiation / Alpha-defensins / Nef Mediated CD4 Down-regulation / regulation of T cell activation / response to vitamin D / Other interleukin signaling / T cell receptor complex / extracellular matrix structural constituent / enzyme-linked receptor protein signaling pathway / Translocation of ZAP-70 to Immunological synapse / Phosphorylation of CD3 and TCR zeta chains / Generation of second messenger molecules / macrophage differentiation / T cell differentiation / immunoglobulin binding / Co-inhibition by PD-1 / positive regulation of calcium ion transport into cytosol / Binding and entry of HIV virion / positive regulation of interleukin-2 production / coreceptor activity / positive regulation of T cell proliferation / positive regulation of calcium-mediated signaling / cell surface receptor protein tyrosine kinase signaling pathway / protein tyrosine kinase binding / clathrin-coated endocytic vesicle membrane / calcium-mediated signaling / Vpu mediated degradation of CD4 / MHC class II protein complex binding / response to estradiol / transmembrane signaling receptor activity / Downstream TCR signaling / Cargo recognition for clathrin-mediated endocytosis / T cell receptor signaling pathway / Clathrin-mediated endocytosis / virus receptor activity / signaling receptor activity / defense response to Gram-negative bacterium / adaptive immune response / response to ethanol / early endosome / cell surface receptor signaling pathway / cell adhesion / immune response / membrane raft / endoplasmic reticulum lumen / external side of plasma membrane / symbiont entry into host cell / lipid binding / endoplasmic reticulum membrane / protein kinase binding / 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 | HIV-1 06TG.HT008 (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: 8.7 Å | ||||||
データ登録者 | Concha, N.O. / William, S.P. / Wenzel, D.L. | ||||||
| 資金援助 | 米国, 1件
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引用 | ジャーナル: J Mol Biol / 年: 2022タイトル: Novel Bent Conformation of CD4 Induced by HIV-1 Inhibitor Indirectly Prevents Productive Viral Attachment. 著者: David Wensel / Shawn Williams / David P Dixon / Paris Ward / Patti McCormick / Nestor Concha / Eugene Stewart / Xuan Hong / Charles Mazzucco / Shreya Pal / Bo Ding / Christoph Fellinger / Mark Krystal / ![]() 要旨: GSK3732394 is a multi-specific biologic inhibitor of HIV entry currently under clinical evaluation. A key component of this molecule is an adnectin (6940_B01) that binds to CD4 and inhibits ...GSK3732394 is a multi-specific biologic inhibitor of HIV entry currently under clinical evaluation. A key component of this molecule is an adnectin (6940_B01) that binds to CD4 and inhibits downstream actions of gp160. Studies were performed to determine the binding site of the adnectin on CD4 and to understand the mechanism of inhibition. Using hydrogen-deuterium exchange with mass spectrometry (HDX), CD4 peptides showed differential rates of deuteration (either enhanced or slowed) in the presence of the adnectin that mapped predominantly to the interface of domains 2 and 3 (D2-D3). In addition, an X-ray crystal structure of an ibalizumab Fab/CD4(D1-D4)/adnectin complex revealed an extensive interface between the adnectin and residues on CD4 domains D2-D4 that stabilize a novel T-shaped CD4 conformation. A cryo-EM map of the gp140/CD4/GSK3732394 complex clearly shows the bent conformation for CD4 while bound to gp140. Mutagenic analyses on CD4 confirmed that amino acid F202 forms a key interaction with the adnectin. In addition, amino acid L151 was shown to be a critical indirect determinant of the specificity for binding to the human CD4 protein over related primate CD4 molecules, as it appears to modulate CD4's flexibility to adopt the adnectin-bound conformation. The significant conformational change of CD4 upon adnectin binding brings the D1 domain of CD4 in proximity to the host cell membrane surface, thereby re-orienting the gp120 binding site in a direction that is inaccessible to incoming virus due to a steric clash between gp160 trimers on the virus surface and the target cell membrane. | ||||||
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構造の表示
| ムービー |
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| 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 | 7t0o.cif.gz | 496.6 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb7t0o.ent.gz | 397.1 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 7t0o.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/t0/7t0o ftp://data.pdbj.org/pub/pdb/validation_reports/t0/7t0o | HTTPS FTP |
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-関連構造データ
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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
-BG505 SOSIP.664 ... , 4種, 9分子 DGIBFJKNR
| #1: タンパク質 | 分子量: 72830.398 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) HIV-1 06TG.HT008 (ヒト免疫不全ウイルス)細胞株 (発現宿主): Expi293F / 発現宿主: Homo sapiens (ヒト)#2: タンパク質・ペプチド | | 分子量: 3337.105 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) HIV-1 06TG.HT008 (ヒト免疫不全ウイルス)細胞株 (発現宿主): Expi293F / 発現宿主: Homo sapiens (ヒト)#3: タンパク質・ペプチド | 分子量: 3252.000 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) HIV-1 06TG.HT008 (ヒト免疫不全ウイルス)細胞株 (発現宿主): Expi293F / 発現宿主: Homo sapiens (ヒト)#6: タンパク質・ペプチド | 分子量: 2996.685 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) HIV-1 06TG.HT008 (ヒト免疫不全ウイルス)細胞株 (発現宿主): Expi293F / 発現宿主: Homo sapiens (ヒト) |
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-タンパク質 , 2種, 6分子 HLMOPQ
| #4: タンパク質 | 分子量: 41385.449 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発現宿主: ![]() 参照: UniProt: P01730 #5: タンパク質 | 分子量: 11959.172 Da / 分子数: 3 / 由来タイプ: 組換発現 詳細: The native 10th fibronectin type III (10Fn3) domain from human fibronectin was used as the template for construction of novel libraries of Adnectin variants (Wenzel, D., et al. (2017) ...詳細: The native 10th fibronectin type III (10Fn3) domain from human fibronectin was used as the template for construction of novel libraries of Adnectin variants (Wenzel, D., et al. (2017) Antimicrobial Agents and Chemotherapy, Vol 61(8), e00508-17, pp 1-19) 由来: (組換発現) Homo sapiens (ヒト) / 発現宿主: ![]() |
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-詳細
| 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: Ternary complex of the HIV-1 gp140 trimer in complex with the extracellular domains (domains 1-4) of CD4 and an adnectin domain of Combinectin タイプ: COMPLEX 詳細: the gp140 trimer at 0.67 mg/ml was mixed with soluble CD4 first, and then with Combinection in a 1.25:1 ratio. The sample was incubated overnight at 4 degC. The sample was concentrated to ...詳細: the gp140 trimer at 0.67 mg/ml was mixed with soluble CD4 first, and then with Combinection in a 1.25:1 ratio. The sample was incubated overnight at 4 degC. The sample was concentrated to 35ul before injecting into a Phenomenex 4.6 x 300 mm 3um bead 500Angstroms pore Yara SEC column equilibrated with 20mM Hepes pH7.5, 200 mM KCl, 5mM MgCl2. The complexes were eluted with a flow rate of 0.2 ml/min and fractions collected every 20 seconds into a Thermo-Fisher UV transparent 96-well plates. The absorbance at 280nm was measured for each fraction using a Spectramax plate scanner. The high-molecular weight complex appeared to be comprised of gp140:CD4:Combinectin in a 1:1:1 ratio. The sample used for cryo-EM studies was the single peak fraction of gp140/CD4/Combinectin (0.076 mg/ml) Entity ID: all / 由来: MULTIPLE SOURCES | ||||||||||||||||
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| 分子量 | 実験値: NO | ||||||||||||||||
| 緩衝液 | pH: 7.5 | ||||||||||||||||
| 緩衝液成分 |
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| 試料 | 濃度: 0.08 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: the gp140/CD4/Combinectin (0.076 mg/ml), 3.5uL were applied to Quantifoil 1.2/1.3 Cu 400 mesh grids that had previously been glow discharged for 20 sec using a EasyGlo (20mA, 0.3 mBar). The ...詳細: the gp140/CD4/Combinectin (0.076 mg/ml), 3.5uL were applied to Quantifoil 1.2/1.3 Cu 400 mesh grids that had previously been glow discharged for 20 sec using a EasyGlo (20mA, 0.3 mBar). The grids were plunged into liquid ethane using a Vitrobot plunger (chamber set to 4 degC and 80% RH) immediately after blotting from 2.5 to 4 sec | ||||||||||||||||
| 試料支持 | 詳細: glow discharged for 20 sec using a EasyGlo (20mA, 0.3 mBar) 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 IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 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 / 最大 デフォーカス(公称値): 3400 nm / 最小 デフォーカス(公称値): 1400 nm |
| 撮影 | 平均露光時間: 75.7 sec. / 電子線照射量: 1.022 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: FEI FALCON III (4k x 4k) 実像数: 1078 |
| 電子光学装置 | 位相板: OTHER / 球面収差補正装置: Cs corrector |
| 画像スキャン | サンプリングサイズ: 11 µm / 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 | |||||||||||||||||||||||||||
| 対称性 | 点対称性: C3 (3回回転対称) | |||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 8.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 208485 / クラス平均像の数: 3 / 対称性のタイプ: POINT | |||||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: RIGID BODY FIT |
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万見について




HIV-1 06TG.HT008 (ヒト免疫不全ウイルス)
Homo sapiens (ヒト)
米国, 1件
引用
UCSF Chimera





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