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基本情報
登録情報 | データベース: PDB / ID: 5a7x | |||||||||
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タイトル | negative stain EM of BG505 SOSIP.664 in complex with sCD4, 17b, and 8ANC195 | |||||||||
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![]() | VIRAL PROTEIN | |||||||||
機能・相同性 | ![]() helper T cell enhancement of adaptive immune response / interleukin-16 binding / interleukin-16 receptor activity / maintenance of protein location in cell / T cell selection / MHC class II protein binding / positive regulation of kinase activity / cellular response to granulocyte macrophage colony-stimulating factor stimulus / interleukin-15-mediated signaling pathway / positive regulation of monocyte differentiation ...helper T cell enhancement of adaptive immune response / interleukin-16 binding / interleukin-16 receptor activity / maintenance of protein location in cell / T cell selection / MHC class II protein binding / positive regulation of kinase activity / cellular response to granulocyte macrophage colony-stimulating factor stimulus / interleukin-15-mediated signaling pathway / positive regulation of monocyte differentiation / Nef Mediated CD4 Down-regulation / Alpha-defensins / regulation of T cell activation / Other interleukin signaling / extracellular matrix structural constituent / T cell receptor complex / enzyme-linked receptor protein signaling pathway / Dectin-2 family / Translocation of ZAP-70 to Immunological synapse / Phosphorylation of CD3 and TCR zeta chains / macrophage differentiation / regulation of calcium ion transport / Generation of second messenger molecules / T cell differentiation / Co-inhibition by PD-1 / positive regulation of protein kinase activity / Binding and entry of HIV virion / coreceptor activity / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of interleukin-2 production / positive regulation of calcium-mediated signaling / cell surface receptor protein tyrosine kinase signaling pathway / host cell endosome membrane / protein tyrosine kinase binding / Vpu mediated degradation of CD4 / clathrin-coated endocytic vesicle membrane / calcium-mediated signaling / positive regulation of T cell activation / MHC class II protein complex binding / transmembrane signaling receptor activity / Downstream TCR signaling / Cargo recognition for clathrin-mediated endocytosis / signaling receptor activity / Clathrin-mediated endocytosis / positive regulation of protein phosphorylation / virus receptor activity / defense response to Gram-negative bacterium / clathrin-dependent endocytosis of virus by host cell / adaptive immune response / positive regulation of canonical NF-kappaB signal transduction / positive regulation of viral entry into host cell / early endosome / cell surface receptor signaling pathway / positive regulation of ERK1 and ERK2 cascade / positive regulation of MAPK cascade / cell adhesion / viral protein processing / immune response / membrane raft / endoplasmic reticulum lumen / external side of plasma membrane / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / lipid binding / viral envelope / endoplasmic reticulum membrane / protein kinase binding / positive regulation of DNA-templated transcription / virion attachment to host cell / host cell plasma membrane / virion membrane / structural molecule activity / enzyme binding / signal transduction / protein homodimerization activity / zinc ion binding / identical protein binding / membrane / plasma 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 / ネガティブ染色法 / 解像度: 17 Å | |||||||||
![]() | Scharf, L. / Wang, H. / Gao, H. / Chen, S. / McDowall, A. / Bjorkman, P. | |||||||||
![]() | ![]() タイトル: Broadly Neutralizing Antibody 8ANC195 Recognizes Closed and Open States of HIV-1 Env. 著者: Louise Scharf / Haoqing Wang / Han Gao / Songye Chen / Alasdair W McDowall / Pamela J Bjorkman / ![]() 要旨: The HIV-1 envelope (Env) spike contains limited epitopes for broadly neutralizing antibodies (bNAbs); thus, most neutralizing antibodies are strain specific. The 8ANC195 epitope, defined by crystal ...The HIV-1 envelope (Env) spike contains limited epitopes for broadly neutralizing antibodies (bNAbs); thus, most neutralizing antibodies are strain specific. The 8ANC195 epitope, defined by crystal and electron microscopy (EM) structures of bNAb 8ANC195 complexed with monomeric gp120 and trimeric Env, respectively, spans the gp120 and gp41 Env subunits. To investigate 8ANC195's gp41 epitope at higher resolution, we solved a 3.58 Å crystal structure of 8ANC195 complexed with fully glycosylated Env trimer, revealing 8ANC195 insertion into a glycan shield gap to contact gp120 and gp41 glycans and protein residues. To determine whether 8ANC195 recognizes the CD4-bound open Env conformation that leads to co-receptor binding and fusion, one of several known conformations of virion-associated Env, we solved EM structures of an Env/CD4/CD4-induced antibody/8ANC195 complex. 8ANC195 binding partially closed the CD4-bound trimer, confirming structural plasticity of Env by revealing a previously unseen conformation. 8ANC195's ability to bind different Env conformations suggests advantages for potential therapeutic applications. | |||||||||
履歴 |
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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 | ![]() | 795.8 KB | 表示 | ![]() |
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PDB形式 | ![]() | 644.5 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
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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
-タンパク質 , 2種, 6分子 AEIBFJ
#1: タンパク質 | 分子量: 34838.691 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 株: YU2 / プラスミド: PTT5 / 細胞株 (発現宿主): HEK293-6E / 発現宿主: ![]() #2: タンパク質 | 分子量: 20129.896 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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-抗体 , 4種, 12分子 CGKDHLMOQNPR
#3: 抗体 | 分子量: 23399.898 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: 24457.387 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #5: 抗体 | 分子量: 23401.984 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #6: 抗体 | 分子量: 26125.270 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 , 1種, 45分子 
#7: 糖 | ChemComp-NAG / |
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-詳細
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: BG505 SOSIP.664 IN COMPLEX WITH 17B, SCD4, AND 8ANC195 タイプ: COMPLEX |
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緩衝液 | 名称: 20MM TRIS, 50 MM NACL / pH: 8 / 詳細: 20MM TRIS, 50 MM NACL |
試料 | 濃度: 0.01 mg/ml / 包埋: NO / シャドウイング: NO / 染色: YES / 凍結: NO |
染色 | タイプ: NEGATIVE / 染色剤: uranyl acetate |
試料支持 | 詳細: HOLEY CARBON |
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電子顕微鏡撮影
顕微鏡 | モデル: FEI TECNAI 12 / 日付: 2015年4月7日 |
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電子銃 | 電子線源: LAB6 / 加速電圧: 120 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 42000 X / Cs: 2.2 mm |
撮影 | フィルム・検出器のモデル: GATAN ULTRASCAN 1000 (2k x 2k) |
画像スキャン | デジタル画像の数: 642 |
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解析
EMソフトウェア |
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CTF補正 | 詳細: INDIVIDUAL PARTICLES | ||||||||||||||||
対称性 | 点対称性: C3 (3回回転対称) | ||||||||||||||||
3次元再構成 | 手法: REFERENCE-BASED REFINEMENT / 解像度: 17 Å / 粒子像の数: 7174 / ピクセルサイズ(実測値): 2.5 Å 詳細: SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-3086. (DEPOSITION ID: 13327). 対称性のタイプ: POINT | ||||||||||||||||
原子モデル構築 | プロトコル: OTHER / 詳細: METHOD--MANUAL DOCKING AND LOCAL CORRELATION | ||||||||||||||||
精密化 | 最高解像度: 17 Å | ||||||||||||||||
精密化ステップ | サイクル: LAST / 最高解像度: 17 Å
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