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基本情報
登録情報 | データベース: PDB / ID: 8opn | |||||||||
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タイトル | Human Coronavirus HKU1 spike glycoprotein in complex with an alpha2,8-linked 9-O-acetylated disialoside (1-up state) | |||||||||
![]() | Spike glycoprotein,General control transcription factor GCN4 | |||||||||
![]() | VIRAL PROTEIN / Virus / Coronavirus / HKU1 / Spike / Glycoprotein / Membrane fusion | |||||||||
機能・相同性 | ![]() protein localization to nuclear periphery / FCERI mediated MAPK activation / Activation of the AP-1 family of transcription factors / response to amino acid starvation / mediator complex binding / negative regulation of ribosomal protein gene transcription by RNA polymerase II / positive regulation of cellular response to amino acid starvation / nitrogen catabolite activation of transcription from RNA polymerase II promoter / Oxidative Stress Induced Senescence / TFIID-class transcription factor complex binding ...protein localization to nuclear periphery / FCERI mediated MAPK activation / Activation of the AP-1 family of transcription factors / response to amino acid starvation / mediator complex binding / negative regulation of ribosomal protein gene transcription by RNA polymerase II / positive regulation of cellular response to amino acid starvation / nitrogen catabolite activation of transcription from RNA polymerase II promoter / Oxidative Stress Induced Senescence / TFIID-class transcription factor complex binding / positive regulation of transcription initiation by RNA polymerase II / positive regulation of RNA polymerase II transcription preinitiation complex assembly / amino acid biosynthetic process / cellular response to amino acid starvation / endocytosis involved in viral entry into host cell / RNA polymerase II transcription regulator complex / : / DNA-binding transcription activator activity, RNA polymerase II-specific / RNA polymerase II-specific DNA-binding transcription factor binding / transcription regulator complex / sequence-specific DNA binding / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / receptor-mediated virion attachment to host cell / DNA-binding transcription factor activity, RNA polymerase II-specific / regulation of cell cycle / intracellular signal transduction / RNA polymerase II cis-regulatory region sequence-specific DNA binding / DNA-binding transcription factor activity / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / chromatin binding / host cell plasma membrane / virion membrane / negative regulation of transcription by RNA polymerase II / positive regulation of transcription by RNA polymerase II / identical protein binding / membrane / nucleus 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: 4.7 Å | |||||||||
![]() | Pronker, M.F. / Creutznacher, R. / Hurdiss, D.L. | |||||||||
資金援助 | ![]() ![]()
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![]() | ![]() タイトル: Sialoglycan binding triggers spike opening in a human coronavirus. 著者: Matti F Pronker / Robert Creutznacher / Ieva Drulyte / Ruben J G Hulswit / Zeshi Li / Frank J M van Kuppeveld / Joost Snijder / Yifei Lang / Berend-Jan Bosch / Geert-Jan Boons / Martin Frank ...著者: Matti F Pronker / Robert Creutznacher / Ieva Drulyte / Ruben J G Hulswit / Zeshi Li / Frank J M van Kuppeveld / Joost Snijder / Yifei Lang / Berend-Jan Bosch / Geert-Jan Boons / Martin Frank / Raoul J de Groot / Daniel L Hurdiss / ![]() ![]() ![]() 要旨: Coronavirus spike proteins mediate receptor binding and membrane fusion, making them prime targets for neutralizing antibodies. In the cases of severe acute respiratory syndrome coronavirus, severe ...Coronavirus spike proteins mediate receptor binding and membrane fusion, making them prime targets for neutralizing antibodies. In the cases of severe acute respiratory syndrome coronavirus, severe acute respiratory syndrome coronavirus 2 and Middle East respiratory syndrome coronavirus, spike proteins transition freely between open and closed conformations to balance host cell attachment and immune evasion. Spike opening exposes domain S1, allowing it to bind to proteinaceous receptors, and is also thought to enable protein refolding during membrane fusion. However, with a single exception, the pre-fusion spike proteins of all other coronaviruses studied so far have been observed exclusively in the closed state. This raises the possibility of regulation, with spike proteins more commonly transitioning to open states in response to specific cues, rather than spontaneously. Here, using cryogenic electron microscopy and molecular dynamics simulations, we show that the spike protein of the common cold human coronavirus HKU1 undergoes local and long-range conformational changes after binding a sialoglycan-based primary receptor to domain S1. This binding triggers the transition of S1 domains to the open state through allosteric interdomain crosstalk. Our findings provide detailed insight into coronavirus attachment, with possibilities of dual receptor usage and priming of entry as a means of immune escape. | |||||||||
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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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PDBx/mmCIF形式 | ![]() | 644.5 KB | 表示 | ![]() |
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PDB形式 | ![]() | 524.4 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 | ![]() | 1.8 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.8 MB | 表示 | |
XML形式データ | ![]() | 108.6 KB | 表示 | |
CIF形式データ | ![]() | 162.5 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
#1: タンパク質 | 分子量: 147770.344 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() ![]() 株: Caen1 / 遺伝子: GCN4, AAS101, AAS3, ARG9, YEL009C / 細胞株 (発現宿主): HEK293 / 器官 (発現宿主): KIDNEY / 発現宿主: ![]() #2: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #3: 多糖 | タイプ: oligosaccharide / 分子量: 642.562 Da / 分子数: 3 / 由来タイプ: 組換発現 #4: 糖 | ChemComp-NAG / 研究の焦点であるリガンドがあるか | 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: Trimeric spike glycoprotein / タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT | |||||||||||||||||||||||||
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分子量 | 値: 0.44 MDa / 実験値: NO | |||||||||||||||||||||||||
由来(天然) |
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由来(組換発現) | 生物種: ![]() | |||||||||||||||||||||||||
緩衝液 | pH: 8 | |||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 1.3 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: Concentration of protein (N-linked glycans not included due to glycan heterogeneity). | |||||||||||||||||||||||||
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: 95 % / 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): 105000 X / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 1500 nm / Cs: 2.7 mm / C2レンズ絞り径: 50 µm |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 2.68 sec. / 電子線照射量: 46 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 撮影したグリッド数: 1 / 実像数: 4057 |
電子光学装置 | 詳細: BioContinuum Imaging Filter / エネルギーフィルタースリット幅: 20 eV |
画像スキャン | 横: 5760 / 縦: 4092 |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.19.2_4158: / 分類: 精密化 | ||||||||||||||||||||||||||||||||||||||||||||||||
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EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 956697 | ||||||||||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 4.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 36048 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | B value: 114 / プロトコル: RIGID BODY FIT / 空間: REAL / Target criteria: Cross-correlation coefficient | ||||||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | Accession code: 6nzk / Chain residue range: 14-1225 / 詳細: Phyre2 / Source name: Other / タイプ: in silico model | ||||||||||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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