+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-20817 | |||||||||
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タイトル | Cryo-EM structure of HIV-1 neutralizing antibody DH270 UCA3 in complex with CH848 10.17DT Env | |||||||||
マップデータ | ||||||||||
試料 |
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キーワード | V3-glycan site / unmutated common ancestor / DH270 lineage / VIRAL PROTEIN / VIRAL PROTEIN-immune system complex | |||||||||
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 / 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 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 4.2 Å | |||||||||
データ登録者 | Acharya P / Henderson RC | |||||||||
資金援助 | 米国, 2件
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引用 | ジャーナル: Science / 年: 2019 タイトル: Targeted selection of HIV-specific antibody mutations by engineering B cell maturation. 著者: Kevin O Saunders / Kevin Wiehe / Ming Tian / Priyamvada Acharya / Todd Bradley / S Munir Alam / Eden P Go / Richard Scearce / Laura Sutherland / Rory Henderson / Allen L Hsu / Mario J Borgnia ...著者: Kevin O Saunders / Kevin Wiehe / Ming Tian / Priyamvada Acharya / Todd Bradley / S Munir Alam / Eden P Go / Richard Scearce / Laura Sutherland / Rory Henderson / Allen L Hsu / Mario J Borgnia / Haiyan Chen / Xiaozhi Lu / Nelson R Wu / Brian Watts / Chuancang Jiang / David Easterhoff / Hwei-Ling Cheng / Kelly McGovern / Peyton Waddicor / Aimee Chapdelaine-Williams / Amanda Eaton / Jinsong Zhang / Wes Rountree / Laurent Verkoczy / Mark Tomai / Mark G Lewis / Heather R Desaire / Robert J Edwards / Derek W Cain / Mattia Bonsignori / David Montefiori / Frederick W Alt / Barton F Haynes / 要旨: INTRODUCTION: A major goal of HIV-1 vaccine development is the design of immunogens that induce broadly neutralizing antibodies (bnAbs). However, vaccination of humans has not resulted in the ...INTRODUCTION: A major goal of HIV-1 vaccine development is the design of immunogens that induce broadly neutralizing antibodies (bnAbs). However, vaccination of humans has not resulted in the induction of affinity-matured and potent HIV-1 bnAbs. To devise effective vaccine strategies, we previously determined the maturation pathway of select HIV-1 bnAbs from acute infection through neutralizing antibody development. During their evolution, bnAbs acquire an abundance of improbable amino acid substitutions as a result of nucleotide mutations at variable region sequences rarely targeted by activation-induced cytidine deaminase, the enzyme responsible for antibody mutation. A subset of improbable mutations is essential for broad neutralization activity, and their acquisition represents a key roadblock to bnAb development. RATIONALE: Current bnAb lineage-based vaccine strategies can initiate bnAb lineage development in animal models but have not specifically elicited the improbable mutations required for neutralization ...RATIONALE: Current bnAb lineage-based vaccine strategies can initiate bnAb lineage development in animal models but have not specifically elicited the improbable mutations required for neutralization breadth. Induction of bnAbs requires vaccine strategies that specifically engage bnAb precursors and subsequently select for improbable mutations required for broadly neutralizing activity. We hypothesized that vaccination with immunogens that bind with moderate to high affinity to bnAb B cell precursors, and with higher affinity to precursors that have acquired improbable mutations, could initiate bnAb B cell lineages and select for key improbable mutations required for bnAb development. RESULTS: We elicited serum neutralizing HIV-1 antibodies in human bnAb precursor knock-in mice and wild-type macaques vaccinated with immunogens designed to select for improbable mutations. We ...RESULTS: We elicited serum neutralizing HIV-1 antibodies in human bnAb precursor knock-in mice and wild-type macaques vaccinated with immunogens designed to select for improbable mutations. We designed two HIV-1 envelope immunogens that bound precursor B cells of either a CD4 binding site or V3-glycan bnAb lineage. In vitro, these immunogens bound more strongly to bnAb precursors once the precursor acquired the desired improbable mutations. Vaccination of macaques with the CD4 binding site–targeting immunogen induced CD4 binding site serum neutralizing antibodies. Antibody sequences elicited in human bnAb precursor knock-in mice encoded functional improbable mutations critical for bnAb development. In bnAb precursor knock-in mice, we isolated a vaccine-elicited monoclonal antibody bearing functional improbable mutations that was capable of neutralizing multiple HIV-1 global isolates. Structures of a bnAb precursor, a bnAb, and the vaccine-elicited antibody revealed the precise roles that acquired improbable mutations played in recognizing the HIV-1 envelope. Thus, our immunogens elicited antibody responses in macaques and knock-in mice that exhibited the mutational patterns, structural characteristics, or neutralization profiles of nascent broadly neutralizing antibodies. CONCLUSION: Our study represents a proof of concept for targeted selection of improbable mutations to guide antibody affinity maturation. Moreover, this study demonstrates a rational strategy for ...CONCLUSION: Our study represents a proof of concept for targeted selection of improbable mutations to guide antibody affinity maturation. Moreover, this study demonstrates a rational strategy for sequential immunogen design to circumvent the difficult roadblocks in HIV-1 bnAb induction by vaccination. We show that immunogens should exhibit differences in affinity across antibody maturation stages where improbable mutations are necessary for the desired antibody function. This strategy of selection of specific antibody nucleotides by immunogen design can be applied to B cell lineages targeting other pathogens where guided affinity maturation is needed for a protective antibody response. | |||||||||
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_20817.map.gz | 117.9 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-20817-v30.xml emd-20817.xml | 16.5 KB 16.5 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_20817.png | 112.9 KB | ||
Filedesc metadata | emd-20817.cif.gz | 6.9 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-20817 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-20817 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_20817_validation.pdf.gz | 533.2 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_20817_full_validation.pdf.gz | 532.7 KB | 表示 | |
XML形式データ | emd_20817_validation.xml.gz | 6.7 KB | 表示 | |
CIF形式データ | emd_20817_validation.cif.gz | 7.7 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-20817 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-20817 | 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_20817.map.gz / 形式: CCP4 / 大きさ: 125 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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: 1.08 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 : DH270 UCA3 Fab bound to HIV-1 Env CH848 10.17DT
全体 | 名称: DH270 UCA3 Fab bound to HIV-1 Env CH848 10.17DT |
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要素 |
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-超分子 #1: DH270 UCA3 Fab bound to HIV-1 Env CH848 10.17DT
超分子 | 名称: DH270 UCA3 Fab bound to HIV-1 Env CH848 10.17DT / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #2-#4 |
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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) |
分子量 | 理論値: 360 KDa |
-分子 #1: CH848 10.17 DT gp120
分子 | 名称: CH848 10.17 DT gp120 / タイプ: protein_or_peptide / ID: 1 / コピー数: 3 / 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) |
分子量 | 理論値: 51.693512 KDa |
組換発現 | 生物種: Homo sapiens (ヒト) |
配列 | 文字列: ENLWVTVYYG VPVWKEAKTT LFCASDARAY EKEVHNVWAT HACVPTDPSP QELVLGNVTE NFNMWKNDMV DQMHEDIISL WDQSLKPCV KLTPLCVTLI CSDATVKTGT VEEMKNCSFN TTTEIRDKEK KEYALFYKPD IVPLSETNNT SEYRLINCNT S CVTQACPK ...文字列: ENLWVTVYYG VPVWKEAKTT LFCASDARAY EKEVHNVWAT HACVPTDPSP QELVLGNVTE NFNMWKNDMV DQMHEDIISL WDQSLKPCV KLTPLCVTLI CSDATVKTGT VEEMKNCSFN TTTEIRDKEK KEYALFYKPD IVPLSETNNT SEYRLINCNT S CVTQACPK VTFEPIPIHY CAPAGYAILK CNDETFNGTG PCSNVSTVQC THGIRPVVST QLLLNGSLAE KEIVIRSENL TN NAKIIIV HLHTPVEIVC TRPNNNTRKS VRIGPGQTFY ATGDIIGDIK QAHCNISEEK WNDTLQKVGI ELQKHFPNKT IKY NQSAGG DMEITTHSFN CGGEFFYCNT SNLFNGTYNG TYISTNSSAN STSTITLQCR IKQIINMWQG VGRCMYAPPI AGNI TCRSN ITGLLLTRDG GTNSNETETF RPAGGDMRDN WRSELYKYKV VKIEPLGVAP TRCKRRV UniProtKB: Envelope glycoprotein gp160 |
-分子 #2: Envelope glycoprotein gp160
分子 | 名称: Envelope glycoprotein gp160 / タイプ: protein_or_peptide / ID: 2 / コピー数: 3 / 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) |
分子量 | 理論値: 17.162525 KDa |
組換発現 | 生物種: Homo sapiens (ヒト) |
配列 | 文字列: AVGIGAVFLG FLGAAGSTMG AASMTLTVQA RNLLSGIVQQ QSNLLRAIEA QQHLLKLTVW GIKQLQARVL AVERYLRDQQ LLGIWGCSG KLICCTNVPW NSSWSNRNLS EIWDNMTWLQ WDKEISNYTQ IIYGLLEESQ NQQEKNEQDL LALD UniProtKB: Envelope glycoprotein gp160 |
-分子 #3: DH270 UCA3 Fab Heavy Chain
分子 | 名称: DH270 UCA3 Fab Heavy Chain / タイプ: protein_or_peptide / ID: 3 / コピー数: 3 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 25.779795 KDa |
組換発現 | 生物種: Homo sapiens (ヒト) |
配列 | 文字列: QVQLVQSGAE VKKPGASVKV SCKASGYTFT GYYMHWVRQA PGQGLEWMGW INPNSGGTNY AQKFQGRVTM TRDTSISTAY MELSRLRSD DTAVYYCARG GWISLYYDSS GYPNFDYWGQ GTLVTVSGAS TKGPSVFPLA PSSKSTSGGT AALGCLVKDY F PEPVTVSW ...文字列: QVQLVQSGAE VKKPGASVKV SCKASGYTFT GYYMHWVRQA PGQGLEWMGW INPNSGGTNY AQKFQGRVTM TRDTSISTAY MELSRLRSD DTAVYYCARG GWISLYYDSS GYPNFDYWGQ GTLVTVSGAS TKGPSVFPLA PSSKSTSGGT AALGCLVKDY F PEPVTVSW NSGALTSGVH TFPAVLQSSG LYSLSSVVTV PSSSLGTQTY ICNVNHKPSN TKVDKRVEPK SCDKHHHHHH |
-分子 #4: DH270 UCA3 Fab Light Chain
分子 | 名称: DH270 UCA3 Fab Light Chain / タイプ: protein_or_peptide / ID: 4 / コピー数: 3 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 22.648039 KDa |
組換発現 | 生物種: Homo sapiens (ヒト) |
配列 | 文字列: QSALTQPASV SGSPGQSITI SCTGTSSDVG SYNLVSWYQQ HPGKAPKLMI YEVSKRPSGV SNRFSGSKSG NTASLTISGL QAEDEADYY CCSYAGSSTV IFGGGTKLTV LGQPKGAPSV TLFPPSSEEL QANKATLVCL ISDFYPGAVT VAWKADSSPV K AGVETTTP ...文字列: QSALTQPASV SGSPGQSITI SCTGTSSDVG SYNLVSWYQQ HPGKAPKLMI YEVSKRPSGV SNRFSGSKSG NTASLTISGL QAEDEADYY CCSYAGSSTV IFGGGTKLTV LGQPKGAPSV TLFPPSSEEL QANKATLVCL ISDFYPGAVT VAWKADSSPV K AGVETTTP SKQSNNKYAA SSYLSLTPEQ WKSHRSYSCQ VTHEGSTVEK TVAPTECS |
-分子 #9: 2-acetamido-2-deoxy-beta-D-glucopyranose
分子 | 名称: 2-acetamido-2-deoxy-beta-D-glucopyranose / タイプ: ligand / ID: 9 / コピー数: 27 / 式: NAG |
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分子量 | 理論値: 221.208 Da |
Chemical component information | ChemComp-NAG: |
-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: 7.2 |
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グリッド | モデル: C-flat-1.2/1.3 4C / 材質: COPPER / メッシュ: 300 / 支持フィルム - 材質: CARBON / 支持フィルム - トポロジー: HOLEY / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 60 sec. |
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 95 % / チャンバー内温度: 298 K / 装置: LEICA PLUNGER |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: FEI FALCON III (4k x 4k) 平均電子線量: 42.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
初期モデル | モデルのタイプ: NONE |
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最終 再構成 | 想定した対称性 - 点群: C3 (3回回転対称) / 解像度のタイプ: BY AUTHOR / 解像度: 4.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 22093 |
初期 角度割当 | タイプ: MAXIMUM LIKELIHOOD |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD |