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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: 9d7h | ||||||||||||
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タイトル | Cryo-EM structure of BG505 DS-SOSIP.664 with 1 CH103 KN Fab bound | ||||||||||||
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![]() | VIRAL PROTEIN/IMMUNE SYSTEM / Trimer / Env / BG505 / CH103 / VIRAL PROTEIN / VIRAL PROTEIN-IMMUNE SYSTEM complex | ||||||||||||
生物種 | ![]() ![]() ![]() | ||||||||||||
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: 3.59 Å | ||||||||||||
![]() | Parsons, R.J. / Acharya, P. | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Acquisition of quaternary trimer interaction as a key step in the lineage maturation of a broad and potent HIV-1 neutralizing antibody. 著者: Qingbo Liu / Ruth J Parsons / Kevin Wiehe / Robert J Edwards / Kevin O Saunders / Peng Zhang / Huiyi Miao / Kedamawit Tilahun / Julia Jones / Yue Chen / Bhavna Hora / Wilton B Williams / ...著者: Qingbo Liu / Ruth J Parsons / Kevin Wiehe / Robert J Edwards / Kevin O Saunders / Peng Zhang / Huiyi Miao / Kedamawit Tilahun / Julia Jones / Yue Chen / Bhavna Hora / Wilton B Williams / David Easterhoff / Xiao Huang / Katarzyna Janowska / Katayoun Mansouri / Barton F Haynes / Priyamvada Acharya / Paolo Lusso / ![]() 要旨: Although most broadly neutralizing antibodies (bNAbs) specific for the CD4-binding site (CD4-BS) of HIV-1 interact with a single gp120 protomer, a few mimic the quaternary binding mode of CD4, making ...Although most broadly neutralizing antibodies (bNAbs) specific for the CD4-binding site (CD4-BS) of HIV-1 interact with a single gp120 protomer, a few mimic the quaternary binding mode of CD4, making contact with a second protomer through elongated heavy chain framework 3 (FRH3) or complementarity-determining region 1 (CDRH1) loops. Here, we show that a CDRH3-dominated anti-CD4-BS bNAb, CH103, establishes quaternary interaction despite regular-length FRH3 and CDRH1. This quaternary interaction is critical for neutralization and is primarily mediated by two FRH3 acidic residues that were sequentially acquired and subjected to strong positive selection during CH103 maturation. Cryoelectron microscopy (cryo-EM) structures confirmed the role of the two FRH3 acidic residues in mediating quaternary contact and demonstrated that CH103 reaches the adjacent gp120 protomer by virtue of its unique angle of approach. Thus, the acquisition of quaternary interaction may constitute a key step in the lineage maturation of a broad and potent HIV-1 neutralizing antibody. #1: ジャーナル: Acta Crystallogr D Struct Biol / 年: 2019 タイトル: Macromolecular structure determination using X-rays, neutrons and electrons: recent developments in Phenix. 著者: Dorothee Liebschner / Pavel V Afonine / Matthew L Baker / Gábor Bunkóczi / Vincent B Chen / Tristan I Croll / Bradley Hintze / Li Wei Hung / Swati Jain / Airlie J McCoy / Nigel W Moriarty / ...著者: Dorothee Liebschner / Pavel V Afonine / Matthew L Baker / Gábor Bunkóczi / Vincent B Chen / Tristan I Croll / Bradley Hintze / Li Wei Hung / Swati Jain / Airlie J McCoy / Nigel W Moriarty / Robert D Oeffner / Billy K Poon / Michael G Prisant / Randy J Read / Jane S Richardson / David C Richardson / Massimo D Sammito / Oleg V Sobolev / Duncan H Stockwell / Thomas C Terwilliger / Alexandre G Urzhumtsev / Lizbeth L Videau / Christopher J Williams / Paul D Adams / ![]() ![]() ![]() 要旨: Diffraction (X-ray, neutron and electron) and electron cryo-microscopy are powerful methods to determine three-dimensional macromolecular structures, which are required to understand biological ...Diffraction (X-ray, neutron and electron) and electron cryo-microscopy are powerful methods to determine three-dimensional macromolecular structures, which are required to understand biological processes and to develop new therapeutics against diseases. The overall structure-solution workflow is similar for these techniques, but nuances exist because the properties of the reduced experimental data are different. Software tools for structure determination should therefore be tailored for each method. Phenix is a comprehensive software package for macromolecular structure determination that handles data from any of these techniques. Tasks performed with Phenix include data-quality assessment, map improvement, model building, the validation/rebuilding/refinement cycle and deposition. Each tool caters to the type of experimental data. The design of Phenix emphasizes the automation of procedures, where possible, to minimize repetitive and time-consuming manual tasks, while default parameters are chosen to encourage best practice. A graphical user interface provides access to many command-line features of Phenix and streamlines the transition between programs, project tracking and re-running of previous tasks. | ||||||||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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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 | ![]() | 385.8 KB | 表示 | ![]() |
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PDB形式 | ![]() | 表示 | ![]() | |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | 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
-タンパク質 , 2種, 6分子 ACEBDF
#1: タンパク質 | 分子量: 55359.906 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() Variant: BG505 / 発現宿主: ![]() #2: タンパク質 | 分子量: 18344.963 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() Variant: BG505 / 発現宿主: ![]() |
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-抗体 , 2種, 2分子 GH
#3: 抗体 | 分子量: 24530.268 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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#4: 抗体 | 分子量: 25885.307 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
-糖 , 3種, 53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: 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 | N |
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Has protein modification | Y |
-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: BG505 HIV-1 Env with 1 CH103 K75 N76 Fab bound / タイプ: COMPLEX / Entity ID: #3, #1-#2, #4 / 由来: MULTIPLE SOURCES |
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分子量 | 値: 0.25 MDa / 実験値: NO |
緩衝液 | pH: 8 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 |
急速凍結 | 装置: LEICA EM GP / 凍結剤: ETHANE / 湿度: 95 % / 凍結前の試料温度: 295.15 K / 詳細: Leica EM GP2 |
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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: TFS KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 1800 nm / 最小 デフォーカス(公称値): 1400 nm |
撮影 | 電子線照射量: 59.8 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
電子光学装置 | エネルギーフィルタースリット幅: 20 eV |
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解析
EMソフトウェア | 名称: PHENIX / バージョン: 1.21.1_5286 / カテゴリ: モデル精密化 |
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画像処理 | 詳細: The data were processed in cryoSPARCv4.01. Movies were aligned using Patch Motion Correction and the non-dose weighted aligned micrographs were used for the CTF correction with PatchCTF Estimation. |
CTF補正 | 詳細: CryoSPARCv4.01 Patch motion correction and CTF estimation jobs タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
粒子像の選択 | 選択した粒子像数: 997941 |
3次元再構成 | 解像度: 3.59 Å / 解像度の算出法: FSC 0.5 CUT-OFF / 粒子像の数: 128185 / 対称性のタイプ: POINT |