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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: 9be9 | ||||||
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タイトル | HIV-1 Env 16055 dGly4 NFL | ||||||
![]() | Envelope glycoprotein gp140 | ||||||
![]() | VIRAL PROTEIN / HIV-1 / NFL / Env / vaccine design | ||||||
機能・相同性 | ![]() positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / host cell plasma membrane ...positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / host cell plasma membrane / virion membrane / structural molecule activity / membrane 類似検索 - 分子機能 | ||||||
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: 3.8 Å | ||||||
![]() | Ozorowski, G. / Lee, W.-H. / Ward, A.B. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Accelerated cGMP production of near-native HIV-1 Env trimers following electroporation transfection and immunogenicity analysis. 著者: Shridhar Bale / Elena Gustchina / Javier Guenaga / Victor Ayala / Wen-Hsin Lee / Gabriel Ozorowski / Stephen Whitney / Richard Wilson / Sabyasachi Baboo / Jolene K Diedrich / Esmeralda D ...著者: Shridhar Bale / Elena Gustchina / Javier Guenaga / Victor Ayala / Wen-Hsin Lee / Gabriel Ozorowski / Stephen Whitney / Richard Wilson / Sabyasachi Baboo / Jolene K Diedrich / Esmeralda D Doyle / Lauren Hudacik / Elana Ben-Akiva / Kristen A Rodrigues / Darrell J Irvine / John R Yates / James C Paulson / Andrew B Ward / Timothy Fouts / Richard T Wyatt / ![]() 要旨: Evaluation of recombinant HIV-1 surface glycoproteins (Env) as vaccine candidates for Phase I human experimental trials often requires production of cGMP-grade well-ordered Env trimers. Here, we ...Evaluation of recombinant HIV-1 surface glycoproteins (Env) as vaccine candidates for Phase I human experimental trials often requires production of cGMP-grade well-ordered Env trimers. Here, we report an accelerated cGMP compatible approach for expression and purification of a stabilized HIV clade C-derived trimer '16055 DG4 NFL' (for native flexibly linked). This recombinant trimer was expressed from CHO-S™ cells using a MaxCyte® VLX™ electroporation-based transient transfection process. The 16055 DG4 NFL was designed with multiple internal stabilizing mutations and, as well, deletion of four N-linked glycans (DG4) proximal to the CD4 binding site (CD4bs) engineered to improve B cell recognition of this conserved neutralizing determinant. The transient process circumvents the need to develop stable cell lines expressing the Env trimers that is often the most time-consuming step impacting vaccine development timelines. The 16055 DG4 NFL trimer was purified by immunoaffinity chromatography using the broadly neutralizing antibody (bNAb), PGT145. Following additional downstream processing steps, purified trimer was vialed, frozen and stored at -80 °C. Upon thaw and analysis, the trimer displayed homogeneity and a near-native conformation as determined by size-exclusion chromatography (SEC), negative stain and cryo-electron microscopy (EM), differential scanning calorimetry (DSC) and biolayer interferometry (BLI). The immunogenicity of the trimer was tested in rabbits with bolus, escalating dose and divided dose immunization regimens. Rabbits from all three regimens elicited tier 2 autologous neutralizing antibodies that targeted the exposed protein region at the CD4bs. The trimer is currently under investigation in a human clinical trial (NCT06332339) for safety, tolerability and as a priming candidate followed by heterologous boosting to potentially elicit cross-neutralizing antibodies. | ||||||
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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 | ![]() | 320.2 KB | 表示 | ![]() |
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PDB形式 | ![]() | 265.4 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 2.4 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 2.4 MB | 表示 | |
XML形式データ | ![]() | 62 KB | 表示 | |
CIF形式データ | ![]() | 93.1 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 44474MC 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 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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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
#1: タンパク質 | 分子量: 71212.586 Da / 分子数: 3 断片: GGGGSGGGGS is an engineered insertion (linker to replace cleavage site of reference sequence 由来タイプ: 組換発現 / 詳細: HIV-1 Env 16055 dGly4 NFL gp140 由来: (組換発現) ![]() ![]() 遺伝子: env 発現宿主: ![]() ![]() 参照: UniProt: A1EAI1 #2: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #3: 多糖 | #4: 糖 | ChemComp-NAG / 研究の焦点であるリガンドがあるか | N | 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 |
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試料調製
構成要素 | 名称: HIV-1 Env 16055 dGly4 NFL / タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
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分子量 | 実験値: NO |
由来(天然) | 生物種: ![]() ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.4 / 詳細: Added LMNG to 0.005 mM shortly before freezing |
試料 | 濃度: 3.4 mg/ml / 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: 200 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
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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: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 130000 X / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 700 nm / アライメント法: COMA FREE |
試料ホルダ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 電子線照射量: 48 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
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解析
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: C3 (3回回転対称) | |||||||||||||||
3次元再構成 | 解像度: 3.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 91115 / 対称性のタイプ: POINT |