+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-8629 | ||||||||||||
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タイトル | Conformational states of a soluble, uncleaved HIV-1 envelope trimer | ||||||||||||
マップデータ | class1 (close conformation) | ||||||||||||
試料 |
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機能・相同性 | 機能・相同性情報 positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / virus-mediated perturbation of host defense response / fusion of virus membrane with host endosome membrane / viral envelope ...positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / virus-mediated perturbation of host defense response / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / apoptotic process / host cell plasma membrane / structural molecule activity / virion membrane / 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) | ||||||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 21.0 Å | ||||||||||||
データ登録者 | Liu YH / Pan JH / Cai YF / Grigorieff N / Harrison SC / Chen B | ||||||||||||
資金援助 | 米国, 3件
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引用 | ジャーナル: J Virol / 年: 2017 タイトル: Conformational States of a Soluble, Uncleaved HIV-1 Envelope Trimer. 著者: Yuhang Liu / Junhua Pan / Yongfei Cai / Nikolaus Grigorieff / Stephen C Harrison / Bing Chen / 要旨: The HIV-1 envelope spike [Env; trimeric (gp160) cleaved to (gp120/gp41)] induces membrane fusion, leading to viral entry. It is also the viral component targeted by neutralizing antibodies. Vaccine ...The HIV-1 envelope spike [Env; trimeric (gp160) cleaved to (gp120/gp41)] induces membrane fusion, leading to viral entry. It is also the viral component targeted by neutralizing antibodies. Vaccine development requires production, in quantities suitable for clinical studies, of a recombinant form that resembles functional Env. HIV-1 gp140 trimers-the uncleaved ectodomains of (gp160)-from a few selected viral isolates adopt a compact conformation with many antigenic properties of native Env spikes. One is currently being evaluated in a clinical trial. We report here low-resolution (20 Å) electron cryomicroscopy (cryoEM) structures of this gp140 trimer, which adopts two principal conformations, one closed and the other slightly open. The former is indistinguishable at this resolution from those adopted by a stabilized, cleaved trimer (SOSIP) or by a membrane-bound Env trimer with a truncated cytoplasmic tail (EnvΔCT). The latter conformation is closer to a partially open Env trimer than to the fully open conformation induced by CD4. These results show that a stable, uncleaved HIV-1 gp140 trimer has a compact structure close to that of native Env. Development of any HIV vaccine with a protein component (for either priming or boosting) requires production of a recombinant form to mimic the trimeric, functional HIV-1 envelope spike in quantities suitable for clinical studies. Our understanding of the envelope structure has depended in part on a cleaved, soluble trimer, known as SOSIP.664, stabilized by several modifications, including an engineered disulfide. This construct, which is difficult to produce in large quantities, has yet to induce better antibody responses than those to other envelope-based immunogens, even in animal models. The uncleaved ectodomain of the envelope protein, called gp140, has also been made as a soluble form to mimic the native Env present on the virion surface. Most HIV-1 gp140 preparations are not stable, however, and have an inhomogeneous conformation. The results presented here show that gp140 preparations from suitable isolates can adopt a compact, native-like structure, supporting its use as a vaccine candidate. | ||||||||||||
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 | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_8629.map.gz | 13.8 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-8629-v30.xml emd-8629.xml | 13.5 KB 13.5 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_8629_fsc.xml | 14.5 KB | 表示 | FSCデータファイル |
画像 | emd_8629.png | 22.7 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-8629 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-8629 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_8629_validation.pdf.gz | 309.5 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_8629_full_validation.pdf.gz | 309.1 KB | 表示 | |
XML形式データ | emd_8629_validation.xml.gz | 11.6 KB | 表示 | |
CIF形式データ | emd_8629_validation.cif.gz | 15.7 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-8629 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-8629 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_8629.map.gz / 形式: CCP4 / 大きさ: 22.2 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | class1 (close conformation) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 3.96 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-試料の構成要素
-全体 : HIV-1 envelope glycoprotein gp140
全体 | 名称: HIV-1 envelope glycoprotein gp140 |
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要素 |
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-超分子 #1: HIV-1 envelope glycoprotein gp140
超分子 | 名称: HIV-1 envelope glycoprotein gp140 / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all |
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由来(天然) | 生物種: Human immunodeficiency virus 1 (ヒト免疫不全ウイルス) 株: C97ZA012 |
組換発現 | 生物種: Homo sapiens (ヒト) / 組換細胞: HEK 293T |
-分子 #1: HIV-1 envelope glycoprotein gp140
分子 | 名称: HIV-1 envelope glycoprotein gp140 / タイプ: protein_or_peptide / ID: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: Human immunodeficiency virus 1 (ヒト免疫不全ウイルス) |
組換発現 | 生物種: Homo sapiens (ヒト) |
配列 | 文字列: MRVRGIQRNC QHLWRWGTLI LGMLMICSAA ENLWVGNMWV TVYYGVPVWT DAKTTLFCAS DTKAYDREVH NVWATHACVP TDPNPQEIVL ENVTENFNMW KNDMVDQMHE DIISLWDQSL KPCVKLTPLC VTLHCTNATF KNNVTNDMNK EIRNCSFNTT TEIRDKKQQG ...文字列: MRVRGIQRNC QHLWRWGTLI LGMLMICSAA ENLWVGNMWV TVYYGVPVWT DAKTTLFCAS DTKAYDREVH NVWATHACVP TDPNPQEIVL ENVTENFNMW KNDMVDQMHE DIISLWDQSL KPCVKLTPLC VTLHCTNATF KNNVTNDMNK EIRNCSFNTT TEIRDKKQQG YALFYRPDIV LLKENRNNSN NSEYILINCN ASTITQACPK VNFDPIPIHY CAPAGYAILK CNNKTFSGKG PCNNVSTVQC THGIKPVVST QLLLNGSLAE KEIIIRSENL TDNVKTIIVH LNKSVEIVCT RPNNNTRKSM RIGPGQTFYA TGDIIGDIRQ AYCNISGSKW NETLKRVKEK LQENYNNNKT IKFAPSSGGD LEITTHSFNC RGEFFYCNTT RLFNNNATED ETITLPCRIK QIINMWQGVG RAMYAPPIAG NITCKSNITG LLLVRDGGED NKTEEIFRPG GGNMKDNWRS ELYKYKVIEL KPLGIAPTGA KRRVVEREKR AVGIGAVFLG FLGAAGSTMG AASLTLTVQA RQLLSSIVQQ QSNLLRAIEA QQHMLQLTVW GIKQLQTRVL AIERYLKDQQ LLGIWGCSGK LICTTNVPWN SSWSNKSQTD IWNNMTWMEW DREISNYTDT IYRLLEDSQT QQEKNEKDLL ALDSWKNLWS WFDISNWLWY IKSRMKQIED KIEEILSKIY HIENEIARIK KLIGSGGYIP EAPRDGQAYV RKDGEWVLLS TFLGGSGRMK QIEDKIEEIE SKQKKIENEI ARIKKLGSGH HHHHH |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 7.5 |
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グリッド | モデル: Quantifoil R1.2/1.3 / 材質: COPPER / メッシュ: 200 / 前処理 - タイプ: GLOW DISCHARGE |
凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI POLARA 300 |
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撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) デジタル化 - サイズ - 横: 3838 pixel / デジタル化 - サイズ - 縦: 3710 pixel / デジタル化 - サンプリング間隔: 5.0 µm / 撮影したグリッド数: 1 / 実像数: 3138 / 平均露光時間: 8.0 sec. / 平均電子線量: 40.0 e/Å2 / 詳細: movies were collected in super resolution mode |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | C2レンズ絞り径: 100.0 µm / 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.0 mm |
試料ステージ | 試料ホルダーモデル: OTHER / ホルダー冷却材: NITROGEN |
実験機器 | モデル: Tecnai Polara / 画像提供: FEI Company |