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基本情報
登録情報 | データベース: PDB / ID: 8tgw | ||||||||||||
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タイトル | Cryo-EM structure of 1059 SOSIP trimer purified via Galanthus nivalis lectin chromatography | ||||||||||||
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![]() | VIRAL PROTEIN / HIV-1 / Glycoprotein / Lectin / Trimer | ||||||||||||
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: 3.6 Å | ||||||||||||
![]() | Parsons, R.J. / Pothula, K. / Acharya, P. | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Conformational flexibility of HIV-1 envelope glycoproteins modulates transmitted/founder sensitivity to broadly neutralizing antibodies. 著者: Durgadevi Parthasarathy / Karunakar Reddy Pothula / Sneha Ratnapriya / Héctor Cervera Benet / Ruth Parsons / Xiao Huang / Salam Sammour / Katarzyna Janowska / Miranda Harris / Joseph ...著者: Durgadevi Parthasarathy / Karunakar Reddy Pothula / Sneha Ratnapriya / Héctor Cervera Benet / Ruth Parsons / Xiao Huang / Salam Sammour / Katarzyna Janowska / Miranda Harris / Joseph Sodroski / Priyamvada Acharya / Alon Herschhorn / ![]() 要旨: HIV-1 envelope glycoproteins (Envs) of most primary HIV-1 strains exist in closed conformation and infrequently sample open states, limiting access to internal epitopes. Thus, immunogen design aims ...HIV-1 envelope glycoproteins (Envs) of most primary HIV-1 strains exist in closed conformation and infrequently sample open states, limiting access to internal epitopes. Thus, immunogen design aims to mimic the closed Env conformation as preferred target for eliciting broadly neutralizing antibodies (bnAbs). Here we identify incompletely closed Env conformations of 6 out of 13 transmitted/founder (T/F) strains that are sensitive to antibodies that recognize internal epitopes typically exposed on open Envs. A 3.6 Å cryo-electron microscopy structure of unliganded, incompletely closed T/F Envs (1059-SOSIP) reveals protomer motion that increased sampling of states with incompletely closed trimer apex. We reconstruct de novo the post-transmission evolutionary pathway of a second T/F. Evolved viruses exhibit increased Env resistance to cold, soluble CD4 and 19b, all of which correlate with closing of the adapted Env trimer. Lastly, we show that the ultra-broad N6 bnAb efficiently recognizes different Env conformations and exhibits improved antiviral breadth against VRC01-resistant Envs isolated during the first-in-humans antibody-mediated-prevention trial. | ||||||||||||
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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 | ![]() | 359.2 KB | 表示 | ![]() |
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PDB形式 | ![]() | 251 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 | ![]() | 4.2 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 4.3 MB | 表示 | |
XML形式データ | ![]() | 56.4 KB | 表示 | |
CIF形式データ | ![]() | 85 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-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 ABCabc
#1: タンパク質 | 分子量: 55390.684 Da / 分子数: 3 / 変異: mutations to generate the 1059 SOSIP construct / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 発現宿主: ![]() #2: タンパク質 | 分子量: 17258.609 Da / 分子数: 3 / 変異: mutations to generate the 1059 SOSIP construct / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 発現宿主: ![]() |
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-糖 , 4種, 61分子 
#3: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #4: 多糖 | beta-D-mannopyranose-(1-4)-beta-D-mannopyranose | #5: 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 #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: Cryo-EM structure of 1059 SOSIP trimer purified via Galanthus nivalis lectin chromatography タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT |
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分子量 | 値: 0.2175 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: 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 |
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: FEI TITAN 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): 3000 nm / 最小 デフォーカス(公称値): 1000 nm |
撮影 | 電子線照射量: 59.1 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 |
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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: 7260519 詳細: In the first round of particle selection, particles were picked with a box size of 280 angstroms using the Blob picker with a circular blob having a maximum diameter of 240 angstroms and ...詳細: In the first round of particle selection, particles were picked with a box size of 280 angstroms using the Blob picker with a circular blob having a maximum diameter of 240 angstroms and these particles were subjected to multiple rounds of 2D classification. | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.6 Å / 解像度の算出法: FSC 0.5 CUT-OFF / 粒子像の数: 737588 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
原子モデル構築 | B value: 51.14 / プロトコル: FLEXIBLE FIT | ||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 7LX2 Accession code: 7LX2 / Source name: PDB / タイプ: experimental model | ||||||||||||||||||||||||
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: 0.97 Å2 | ||||||||||||||||||||||||
拘束条件 |
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