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基本情報
登録情報 | ![]() | ||||||||||||
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タイトル | HIV-2 CA hexamer bound with Nup153 peptide; assembled with liposome templating | ||||||||||||
![]() | EM map of HIV-2 CA hexamers assembled via liposome templating with Nup153 peptide allowed to bind. | ||||||||||||
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![]() | HIV-2 / Capsid / IP6 / Nup153 / VIRAL PROTEIN | ||||||||||||
機能・相同性 | ![]() HIV-2 retropepsin / negative regulation of RNA export from nucleus / nuclear pore complex assembly / Nuclear Pore Complex (NPC) Disassembly / nuclear inclusion body / Transport of Ribonucleoproteins into the Host Nucleus / nuclear pore nuclear basket / Regulation of Glucokinase by Glucokinase Regulatory Protein / Defective TPR may confer susceptibility towards thyroid papillary carcinoma (TPC) / Transport of the SLBP independent Mature mRNA ...HIV-2 retropepsin / negative regulation of RNA export from nucleus / nuclear pore complex assembly / Nuclear Pore Complex (NPC) Disassembly / nuclear inclusion body / Transport of Ribonucleoproteins into the Host Nucleus / nuclear pore nuclear basket / Regulation of Glucokinase by Glucokinase Regulatory Protein / Defective TPR may confer susceptibility towards thyroid papillary carcinoma (TPC) / Transport of the SLBP independent Mature mRNA / Transport of the SLBP Dependant Mature mRNA / NS1 Mediated Effects on Host Pathways / SUMOylation of SUMOylation proteins / Transport of Mature mRNA Derived from an Intronless Transcript / structural constituent of nuclear pore / nuclear localization sequence binding / Rev-mediated nuclear export of HIV RNA / Nuclear import of Rev protein / SUMOylation of RNA binding proteins / NEP/NS2 Interacts with the Cellular Export Machinery / Transport of Mature mRNA derived from an Intron-Containing Transcript / tRNA processing in the nucleus / RNA export from nucleus / nucleocytoplasmic transport / Viral Messenger RNA Synthesis / SUMOylation of ubiquitinylation proteins / Vpr-mediated nuclear import of PICs / SUMOylation of DNA replication proteins / Regulation of HSF1-mediated heat shock response / mRNA transport / nuclear pore / SUMOylation of DNA damage response and repair proteins / protein-membrane adaptor activity / nuclear periphery / SUMOylation of chromatin organization proteins / HCMV Late Events / Transcriptional regulation by small RNAs / retroviral ribonuclease H / exoribonuclease H / exoribonuclease H activity / molecular condensate scaffold activity / host multivesicular body / DNA integration / ISG15 antiviral mechanism / viral genome integration into host DNA / RNA-directed DNA polymerase / establishment of integrated proviral latency / telomerase activity / viral penetration into host nucleus / RNA stem-loop binding / HCMV Early Events / protein import into nucleus / RNA-DNA hybrid ribonuclease activity / 転移酵素; リンを含む基を移すもの; 核酸を移すもの / nuclear envelope / host cell / snRNP Assembly / viral nucleocapsid / DNA recombination / nuclear membrane / amyloid fibril formation / DNA-directed DNA polymerase / aspartic-type endopeptidase activity / 加水分解酵素; エステル加水分解酵素 / DNA-directed DNA polymerase activity / symbiont-mediated suppression of host gene expression / symbiont entry into host cell / viral translational frameshifting / lipid binding / nucleolus / host cell nucleus / SARS-CoV-2 activates/modulates innate and adaptive immune responses / host cell plasma membrane / virion membrane / structural molecule activity / proteolysis / DNA binding / zinc ion binding / nucleoplasm / identical protein binding / membrane / cytosol 類似検索 - 分子機能 | ||||||||||||
生物種 | ![]() ![]() | ||||||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.99 Å | ||||||||||||
![]() | Freniere C / Cook M / Xiong Y | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural insights into HIV-2 CA lattice formation and FG-pocket binding revealed by single-particle cryo-EM. 著者: Matthew Cook / Christian Freniere / Chunxiang Wu / Faith Lozano / Yong Xiong / ![]() 要旨: One of the striking features of human immunodeficiency virus (HIV) is the capsid, a fullerene cone comprised of pleomorphic capsid protein (CA) that shields the viral genome and recruits cofactors. ...One of the striking features of human immunodeficiency virus (HIV) is the capsid, a fullerene cone comprised of pleomorphic capsid protein (CA) that shields the viral genome and recruits cofactors. Despite significant advances in understanding the mechanisms of HIV-1 CA assembly and host factor interactions, HIV-2 CA assembly remains poorly understood. By templating the assembly of HIV-2 CA on functionalized liposomes, we report high-resolution structures of the HIV-2 CA lattice, including both CA hexamers and pentamers, alone and with peptides of host phenylalanine-glycine (FG)-motif proteins Nup153 and CPSF6. While the overall fold and mode of FG-peptide binding is conserved with HIV-1, this study reveals distinctive features of the HIV-2 CA lattice, including differing structural character at regions of host factor interactions and divergence in the mechanism of formation of CA hexamers and pentamers. This study extends our understanding of HIV capsids and highlights an approach facilitating the study of lentiviral capsid biology. | ||||||||||||
履歴 |
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構造の表示
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マップデータ | ![]() | 10.2 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 24.3 KB 24.3 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 5.9 KB | 表示 | ![]() |
画像 | ![]() | 173.3 KB | ||
Filedesc metadata | ![]() | 7.5 KB | ||
その他 | ![]() ![]() | 19.6 MB 19.6 MB | ||
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
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
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注釈 | EM map of HIV-2 CA hexamers assembled via liposome templating with Nup153 peptide allowed to bind. | ||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.068 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-ハーフマップ: EM half map A of HIV-2 CA hexamer bound with Nup153 peptide.
ファイル | emd_45760_half_map_1.map | ||||||||||||
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注釈 | EM half map A of HIV-2 CA hexamer bound with Nup153 peptide. | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: EM half map B of HIV-2 CA hexamer bound with Nup153 peptide.
ファイル | emd_45760_half_map_2.map | ||||||||||||
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注釈 | EM half map B of HIV-2 CA hexamer bound with Nup153 peptide. | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
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試料の構成要素
-全体 : HIV-2 capsid protein assembled into a lattice via liposome templa...
全体 | 名称: HIV-2 capsid protein assembled into a lattice via liposome templating and then bound with Nup153 peptide. |
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要素 |
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-超分子 #1: HIV-2 capsid protein assembled into a lattice via liposome templa...
超分子 | 名称: HIV-2 capsid protein assembled into a lattice via liposome templating and then bound with Nup153 peptide. タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#2 詳細: C-terminally hexahistidine tagged HIV-2 CA associated with a liposome decorated with NiNTA headgroups which results in the assembly of a lattice of CA. Nup153 peptide is subsequently ...詳細: C-terminally hexahistidine tagged HIV-2 CA associated with a liposome decorated with NiNTA headgroups which results in the assembly of a lattice of CA. Nup153 peptide is subsequently introduced and binding is allowed to equilibrate. |
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分子量 | 理論値: 26.9 KDa |
-超分子 #2: HIV-2 capsid protein
超分子 | 名称: HIV-2 capsid protein / タイプ: complex / ID: 2 / 親要素: 1 / 含まれる分子: #1 |
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由来(天然) | 生物種: ![]() 株: GL-AN |
-超分子 #3: Nup153 peptide
超分子 | 名称: Nup153 peptide / タイプ: complex / ID: 3 / 親要素: 1 / 含まれる分子: #2 |
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由来(天然) | 生物種: ![]() |
-分子 #1: Capsid protein p24
分子 | 名称: Capsid protein p24 / タイプ: protein_or_peptide / ID: 1 詳細: HIV-2 GL-AN capsid protein with C-terminal Gly-Ser-Ser linker followed by a hexahistidine tag after proteolytic processing of the N-terminal Met. コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() 株: GL-AN |
分子量 | 理論値: 26.80949 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: PVQQTGGGNY IHVPLSPRTL NAWVKLVEDK KFGAEVVPGF QALSEGCTPY DINQMLNCVG DHQAAMQIIR EIINDEAADW DAQHPIPGP LPAGQLRDPR GSDIAGTTST VEEQIQWMYR PQNPVPVGNI YRRWIQIGLQ KCVRMYNPTN ILDVKQGPKE P FQSYVDRF ...文字列: PVQQTGGGNY IHVPLSPRTL NAWVKLVEDK KFGAEVVPGF QALSEGCTPY DINQMLNCVG DHQAAMQIIR EIINDEAADW DAQHPIPGP LPAGQLRDPR GSDIAGTTST VEEQIQWMYR PQNPVPVGNI YRRWIQIGLQ KCVRMYNPTN ILDVKQGPKE P FQSYVDRF YKSLRAEQTD PAVKNWMTQT LLIQNANPDC KLVLKGLGMN PTLEEMLTAC QGVGGPGQKA RLMGSSHHHH HH UniProtKB: Gag-Pol polyprotein |
-分子 #2: Nuclear pore complex protein Nup153
分子 | 名称: Nuclear pore complex protein Nup153 / タイプ: protein_or_peptide / ID: 2 / 詳細: Peptide of Nup153, residues 1411-1425 and 1464-1475 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 2.897363 KDa |
配列 | 文字列: PSGVFTFGAN SSTPAGRKIK TAVRRRK UniProtKB: Nuclear pore complex protein Nup153, Nuclear pore complex protein Nup153 |
-分子 #3: INOSITOL HEXAKISPHOSPHATE
分子 | 名称: INOSITOL HEXAKISPHOSPHATE / タイプ: ligand / ID: 3 / コピー数: 2 / 式: IHP |
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分子量 | 理論値: 660.035 Da |
Chemical component information | ![]() ChemComp-IHP: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
濃度 | 10.7 mg/mL | |||||||||||||||
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緩衝液 | pH: 7 構成要素:
詳細: The mixed buffer of storage buffer for the protein and lipid components with IP6 supplemented. | |||||||||||||||
グリッド | モデル: Quantifoil R2/1 / 材質: COPPER / メッシュ: 200 / 支持フィルム - 材質: CARBON / 支持フィルム - トポロジー: HOLEY ARRAY / 支持フィルム - Film thickness: 12 / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 45 sec. / 前処理 - 雰囲気: AIR / 前処理 - 気圧: 0.015 kPa / 詳細: 15 mA discharge current. | |||||||||||||||
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 298 K / 装置: FEI VITROBOT MARK IV 詳細: Grids were dual-side blotted with blot force 0 for 5.5 sec before plunge freezing in liquid ethane.. | |||||||||||||||
詳細 | Sample was prepared with 400 uM HIV-2 CA-6xHis protein, 5.9 mM lipid mix (described in publication), and 4 mM IP6 final concentrations after subsequent addition. Nup153 peptide was then introduced to 400 uM final concentration. Sample was well-distributed on the grid, mostly monodisperse. Perhaps slightly more particles on carbon versus in the hole. |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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特殊光学系 | エネルギーフィルター - 名称: GIF Quantum LS / エネルギーフィルター - スリット幅: 20 eV |
撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 平均電子線量: 50.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | C2レンズ絞り径: 30.0 µm / 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.7 mm / 最大 デフォーカス(公称値): 2.0 µm / 最小 デフォーカス(公称値): 0.8 µm / 倍率(公称値): 81000 |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
-原子モデル構築 1
初期モデル | PDB ID: Chain - Chain ID: A / Chain - Residue range: 1-223 / Chain - Source name: Other / Chain - Initial model type: experimental model / 詳細: NTDs matched well, but the CTD had to be realigned. |
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詳細 | The HIV-2 CA pentamer chain derived from micelle-templated icosahedra described in this publication was used as an initial model for fitting. Flexible fitting was used to move the CTD into its proper location. The peptide was modeled by backbone tracing. |
精密化 | 空間: REAL / プロトコル: OTHER 当てはまり具合の基準: Cross-correlation coefficient |
得られたモデル | ![]() PDB-9cnu: |