+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 3j70 | ||||||
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タイトル | Model of gp120, including variable regions, in complex with CD4 and 17b | ||||||
要素 |
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キーワード | VIRAL PROTEIN/IMMUNE SYSTEM / gp120 / V1V2 / CD4 / 17b / 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 / Synthesis and processing of ENV and VPU / MHC class II protein binding / evasion of host immune response / interleukin-15-mediated signaling pathway / regulation of T cell activation ...helper T cell enhancement of adaptive immune response / interleukin-16 binding / interleukin-16 receptor activity / maintenance of protein location in cell / T cell selection / Synthesis and processing of ENV and VPU / MHC class II protein binding / evasion of host immune response / interleukin-15-mediated signaling pathway / regulation of T cell activation / cellular response to granulocyte macrophage colony-stimulating factor stimulus / positive regulation of monocyte differentiation / positive regulation of kinase activity / Nef Mediated CD4 Down-regulation / Alpha-defensins / extracellular matrix structural constituent / T cell receptor complex / Other interleukin signaling / enzyme-linked receptor protein signaling pathway / Dectin-2 family / 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 / actin filament organization / Vpu mediated degradation of CD4 / calcium-mediated signaling / Assembly Of The HIV Virion / clathrin-coated endocytic vesicle membrane / Budding and maturation of HIV virion / positive regulation of peptidyl-tyrosine phosphorylation / positive regulation of T cell activation / transmembrane signaling receptor activity / Downstream TCR signaling / Cargo recognition for clathrin-mediated endocytosis / 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 / symbiont entry into host cell / 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 / membrane / plasma membrane 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) Human immunodeficiency virus 1 (ヒト免疫不全ウイルス) | ||||||
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: 20 Å | ||||||
データ登録者 | Rasheed, M. / Bettadapura, R. / Bajaj, C. | ||||||
引用 | ジャーナル: Nature / 年: 2008 タイトル: Molecular architecture of native HIV-1 gp120 trimers. 著者: Jun Liu / Alberto Bartesaghi / Mario J Borgnia / Guillermo Sapiro / Sriram Subramaniam / 要旨: The envelope glycoproteins (Env) of human and simian immunodeficiency viruses (HIV and SIV, respectively) mediate virus binding to the cell surface receptor CD4 on target cells to initiate infection. ...The envelope glycoproteins (Env) of human and simian immunodeficiency viruses (HIV and SIV, respectively) mediate virus binding to the cell surface receptor CD4 on target cells to initiate infection. Env is a heterodimer of a transmembrane glycoprotein (gp41) and a surface glycoprotein (gp120), and forms trimers on the surface of the viral membrane. Using cryo-electron tomography combined with three-dimensional image classification and averaging, we report the three-dimensional structures of trimeric Env displayed on native HIV-1 in the unliganded state, in complex with the broadly neutralizing antibody b12 and in a ternary complex with CD4 and the 17b antibody. By fitting the known crystal structures of the monomeric gp120 core in the b12- and CD4/17b-bound conformations into the density maps derived by electron tomography, we derive molecular models for the native HIV-1 gp120 trimer in unliganded and CD4-bound states. We demonstrate that CD4 binding results in a major reorganization of the Env trimer, causing an outward rotation and displacement of each gp120 monomer. This appears to be coupled with a rearrangement of the gp41 region along the central axis of the trimer, leading to closer contact between the viral and target cell membranes. Our findings elucidate the structure and conformational changes of trimeric HIV-1 gp120 relevant to antibody neutralization and attachment to target cells. | ||||||
履歴 |
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Remark 0 | THIS ENTRY 3J70 CONTAINS A STRUCTURAL MODEL FIT TO AN ELECTRON MICROSCOPY MAP (EMD-5020) DETERMINED ...THIS ENTRY 3J70 CONTAINS A STRUCTURAL MODEL FIT TO AN ELECTRON MICROSCOPY MAP (EMD-5020) DETERMINED ORIGINALLY BY AUTHORS: J.LIU, A.BARTESAGHI, M.J.BORGNIA, G.SAPIRO, S.Y.SUBRAMANIAM |
-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 | 3j70.cif.gz | 562.7 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb3j70.ent.gz | 441.4 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 3j70.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 | 3j70_validation.pdf.gz | 750.5 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 3j70_full_validation.pdf.gz | 835.9 KB | 表示 | |
XML形式データ | 3j70_validation.xml.gz | 90.8 KB | 表示 | |
CIF形式データ | 3j70_validation.cif.gz | 139 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/j7/3j70 ftp://data.pdbj.org/pub/pdb/validation_reports/j7/3j70 | 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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-要素
#1: 抗体 | 分子量: 22636.338 Da / 分子数: 3 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) #2: 抗体 | 分子量: 22816.270 Da / 分子数: 3 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) #3: タンパク質 | 分子量: 20503.260 Da / 分子数: 3 / Fragment: UNP residues 26-208 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: P01730 #4: タンパク質 | 分子量: 52572.652 Da / 分子数: 3 / Fragment: UNP residues 31-500 / 由来タイプ: 天然 由来: (天然) Human immunodeficiency virus 1 (ヒト免疫不全ウイルス) 参照: UniProt: P04578 #5: タンパク質 | 分子量: 11932.701 Da / 分子数: 3 / 由来タイプ: 天然 由来: (天然) Human immunodeficiency virus 1 (ヒト免疫不全ウイルス) 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 |
-試料調製
構成要素 | 名称: gp120, including variable regions, in complex with CD4 and 17b タイプ: COMPLEX |
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緩衝液 | pH: 7.2 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 装置: FEI VITROBOT MARK I / 凍結剤: ETHANE |
-電子顕微鏡撮影
実験機器 | モデル: Tecnai Polara / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI POLARA 300 |
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): 34000 X / 最大 デフォーカス(公称値): 4000 nm / 最小 デフォーカス(公称値): 2000 nm |
撮影 | 電子線照射量: 80 e/Å2 / フィルム・検出器のモデル: GENERIC CCD |
放射 | プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray |
放射波長 | 相対比: 1 |
-解析
対称性 | 点対称性: C3 (3回回転対称) | ||||||||||||
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3次元再構成 | 解像度: 20 Å / 解像度の算出法: FSC 0.5 CUT-OFF / 対称性のタイプ: POINT | ||||||||||||
精密化ステップ | サイクル: LAST
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