+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8g9y | ||||||||||||
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タイトル | Cryo-EM structure of vFP49.02 Fab in complex with HIV-1 Env BG505 DS-SOSIP.664 (conformation 3) | ||||||||||||
要素 |
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キーワード | IMMUNE SYSTEM / HIV-1 / fusion peptide / antibody / SOSIP | ||||||||||||
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) Mus musculus (ハツカネズミ) | ||||||||||||
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: 4.28 Å | ||||||||||||
データ登録者 | Changela, A. / Gorman, J. / Kwong, P.D. | ||||||||||||
資金援助 | 米国, 3件
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引用 | ジャーナル: J Virol / 年: 2023 タイトル: Diverse Murine Vaccinations Reveal Distinct Antibody Classes to Target Fusion Peptide and Variation in Peptide Length to Improve HIV Neutralization. 著者: Mallika Sastry / Anita Changela / Jason Gorman / Kai Xu / Gwo-Yu Chuang / Chen-Hsiang Shen / Cheng Cheng / Hui Geng / Sijy O'Dell / Li Ou / Reda Rawi / Mateo Reveiz / Guillaume B E Stewart- ...著者: Mallika Sastry / Anita Changela / Jason Gorman / Kai Xu / Gwo-Yu Chuang / Chen-Hsiang Shen / Cheng Cheng / Hui Geng / Sijy O'Dell / Li Ou / Reda Rawi / Mateo Reveiz / Guillaume B E Stewart-Jones / Shuishu Wang / Baoshan Zhang / Tongqing Zhou / Andrea Biju / Michael Chambers / Xuejun Chen / Angela R Corrigan / Bob C Lin / Mark K Louder / Krisha McKee / Alexandra F Nazzari / Adam S Olia / Danealle K Parchment / Edward K Sarfo / Tyler Stephens / Jonathan Stuckey / Yaroslav Tsybovsky / Raffaello Verardi / Yiran Wang / Cheng-Yan Zheng / Yuling Chen / Nicole A Doria-Rose / Adrian B McDermott / John R Mascola / Peter D Kwong / 要旨: While neutralizing antibodies that target the HIV-1 fusion peptide have been elicited in mice by vaccination, antibodies reported thus far have been from only a single antibody class that could ...While neutralizing antibodies that target the HIV-1 fusion peptide have been elicited in mice by vaccination, antibodies reported thus far have been from only a single antibody class that could neutralize ~30% of HIV-1 strains. To explore the ability of the murine immune system to generate cross-clade neutralizing antibodies and to investigate how higher breadth and potency might be achieved, we tested 17 prime-boost regimens that utilized diverse fusion peptide-carrier conjugates and HIV-1 envelope trimers with different fusion peptides. We observed priming in mice with fusion peptide-carrier conjugates of variable peptide length to elicit higher neutralizing responses, a result we confirmed in guinea pigs. From vaccinated mice, we isolated 21 antibodies, belonging to 4 distinct classes of fusion peptide-directed antibodies capable of cross-clade neutralization. Top antibodies from each class collectively neutralized over 50% of a 208-strain panel. Structural analyses - both X-ray and cryo-EM - revealed each antibody class to recognize a distinct conformation of fusion peptide and to have a binding pocket capable of accommodating diverse fusion peptides. Murine vaccinations can thus elicit diverse neutralizing antibodies, and altering peptide length during prime can improve the elicitation of cross-clade responses targeting the fusion peptide site of HIV-1 vulnerability. The HIV-1 fusion peptide has been identified as a site for elicitation of broadly neutralizing antibodies, with prior studies demonstrating that priming with fusion peptide-based immunogens and boosting with soluble envelope (Env) trimers can elicit cross-clade HIV-1-neutralizing responses. To improve the neutralizing breadth and potency of fusion peptide-directed responses, we evaluated vaccine regimens that incorporated diverse fusion peptide-conjugates and Env trimers with variation in fusion peptide length and sequence. We found that variation in peptide length during prime elicits enhanced neutralizing responses in mice and guinea pigs. We identified vaccine-elicited murine monoclonal antibodies from distinct classes capable of cross-clade neutralization and of diverse fusion peptide recognition. Our findings lend insight into improved immunogens and regimens for HIV-1 vaccine development. | ||||||||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8g9y.cif.gz | 400.4 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8g9y.ent.gz | 327.5 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8g9y.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 | 8g9y_validation.pdf.gz | 4 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8g9y_full_validation.pdf.gz | 4 MB | 表示 | |
XML形式データ | 8g9y_validation.xml.gz | 64.9 KB | 表示 | |
CIF形式データ | 8g9y_validation.cif.gz | 98 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/g9/8g9y ftp://data.pdbj.org/pub/pdb/validation_reports/g9/8g9y | HTTPS FTP |
-関連構造データ
関連構造データ | 29882MC 8fr6C 8g85C 8g9wC 8g9xC 8gasC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-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 BDOEGP
#1: タンパク質 | 分子量: 17146.482 Da / 分子数: 3 / 断片: UNP residues 509-661 / 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) 遺伝子: env / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q2N0S6 #2: タンパク質 | 分子量: 54086.324 Da / 分子数: 3 / 断片: UNP residues 30-510 / 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) 遺伝子: env / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q2N0S6 |
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-抗体 , 2種, 2分子 HL
#3: 抗体 | 分子量: 25020.025 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Mus musculus (ハツカネズミ) / 発現宿主: Homo sapiens (ヒト) |
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#4: 抗体 | 分子量: 23620.969 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Mus musculus (ハツカネズミ) / 発現宿主: Homo sapiens (ヒト) |
-糖 , 5種, 54分子
#5: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #6: 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 #7: 多糖 | #8: 多糖 | #9: 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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-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: vFP49.02 Fab in complex with BG505 DS-SOSIP.664 / タイプ: COMPLEX / Entity ID: #1-#4 / 由来: RECOMBINANT |
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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) |
由来(組換発現) | 生物種: Homo sapiens (ヒト) |
緩衝液 | pH: 7.4 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドのタイプ: C-flat-1.2/1.3 |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 90 % / 凍結前の試料温度: 293 K |
-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): 3000 nm / 最小 デフォーカス(公称値): 1000 nm |
撮影 | 電子線照射量: 69.99 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
-解析
ソフトウェア |
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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: 4.28 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 21522 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
原子モデル構築 |
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精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 274.81 Å2 | ||||||||||||||||||||||||
拘束条件 |
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