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基本情報
登録情報 | データベース: PDB / ID: 6uda | |||||||||
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タイトル | Cryo-EM structure of CH235UCA bound to Man5-enriched CH505.N279K.G458Y.SOSIP.664 | |||||||||
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![]() | VIRAL PROTEIN/Immune System / CH235 lineage / CH505 virus / vaccine design / cryo-EM / VIRAL PROTEIN / VIRAL PROTEIN-Immune System complex | |||||||||
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: 4.2 Å | |||||||||
![]() | Henderson, R. / Acharya, P. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Neutralization-guided design of HIV-1 envelope trimers with high affinity for the unmutated common ancestor of CH235 lineage CD4bs broadly neutralizing antibodies. 著者: Celia C LaBranche / Rory Henderson / Allen Hsu / Shay Behrens / Xuejun Chen / Tongqing Zhou / Kevin Wiehe / Kevin O Saunders / S Munir Alam / Mattia Bonsignori / Mario J Borgnia / Quentin J ...著者: Celia C LaBranche / Rory Henderson / Allen Hsu / Shay Behrens / Xuejun Chen / Tongqing Zhou / Kevin Wiehe / Kevin O Saunders / S Munir Alam / Mattia Bonsignori / Mario J Borgnia / Quentin J Sattentau / Amanda Eaton / Kelli Greene / Hongmei Gao / Hua-Xin Liao / Wilton B Williams / James Peacock / Haili Tang / Lautaro G Perez / Robert J Edwards / Thomas B Kepler / Bette T Korber / Peter D Kwong / John R Mascola / Priyamvada Acharya / Barton F Haynes / David C Montefiori / ![]() ![]() 要旨: The CD4 binding site (CD4bs) of the HIV-1 envelope glycoprotein is susceptible to multiple lineages of broadly neutralizing antibodies (bnAbs) that are attractive to elicit with vaccines. The CH235 ...The CD4 binding site (CD4bs) of the HIV-1 envelope glycoprotein is susceptible to multiple lineages of broadly neutralizing antibodies (bnAbs) that are attractive to elicit with vaccines. The CH235 lineage (VH1-46) of CD4bs bnAbs is particularly attractive because the most mature members neutralize 90% of circulating strains, do not possess long HCDR3 regions, and do not contain insertions and deletions that may be difficult to induce. We used virus neutralization to measure the interaction of CH235 unmutated common ancestor (CH235 UCA) with functional Env trimers on infectious virions to guide immunogen design for this bnAb lineage. Two Env mutations were identified, one in loop D (N279K) and another in V5 (G458Y), that acted synergistically to render autologous CH505 transmitted/founder virus susceptible to neutralization by CH235 UCA. Man5-enriched N-glycans provided additional synergy for neutralization. CH235 UCA bound with nanomolar affinity to corresponding soluble native-like Env trimers as candidate immunogens. A cryo-EM structure of CH235 UCA bound to Man5-enriched CH505.N279K.G458Y.SOSIP.664 revealed interactions of the antibody light chain complementarity determining region 3 (CDR L3) with the engineered Env loops D and V5. These results demonstrate that virus neutralization can directly inform vaccine design and suggest a germline targeting and reverse engineering strategy to initiate and mature the CH235 bnAb lineage. | |||||||||
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構造の表示
ムービー |
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構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 553.7 KB | 表示 | ![]() |
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PDB形式 | ![]() | 440.8 KB | 表示 | ![]() |
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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
-CH505.N279K.G458Y.SOSIP.664 ... , 2種, 6分子 AEIZFJ
#1: タンパク質 | 分子量: 54546.402 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: env / 発現宿主: ![]() #3: タンパク質 | 分子量: 18146.699 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: env / 発現宿主: ![]() |
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-抗体 , 2種, 6分子 CGKDHL
#2: 抗体 | 分子量: 26635.938 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #4: 抗体 | 分子量: 25659.570 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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-糖 , 2種, 9分子 
#5: 多糖 | #6: 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: Complex of the CH235 unmutated common ancestor (UCA) bound to Man5-enriched CH505.N279K.G458Y.SOSIP.664 タイプ: COMPLEX / Entity ID: #2-#4 / 由来: MULTIPLE SOURCES |
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分子量 | 値: 0.36 MDa / 実験値: NO |
由来(天然) | 生物種: ![]() ![]() |
由来(組換発現) | 生物種: ![]() |
緩衝液 | pH: 7.2 |
試料 | 濃度: 1.5 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: 300 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 |
急速凍結 | 凍結剤: ETHANE |
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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 |
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: 42 e/Å2 フィルム・検出器のモデル: FEI FALCON III (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: 4.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 22093 / クラス平均像の数: 1 / 対称性のタイプ: POINT |