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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 7ad1 | ||||||
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タイトル | Cryo-EM structure of a prefusion stabilized SARS-CoV-2 Spike (D614N, R682S, R685G, A892P, A942P and V987P)(One up trimer) | ||||||
![]() | Spike glycoprotein,Envelope glycoprotein,Spike glycoprotein,Envelope glycoprotein,SARS-CoV-2 S protein | ||||||
![]() | VIRAL PROTEIN / SARS-CoV-2 / virology / COVID-19 / class I fusion proteins / S glycoprotein / cryo-EM / prefusion / corona | ||||||
機能・相同性 | ![]() symbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / viral translation / host extracellular space / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion ...symbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / viral translation / host extracellular space / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell / membrane fusion / Attachment and Entry / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / receptor ligand activity / endocytosis involved in viral entry into host cell / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / symbiont entry into host cell / virion attachment to host cell / SARS-CoV-2 activates/modulates innate and adaptive immune responses / host cell plasma membrane / virion membrane / 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 / クライオ電子顕微鏡法 / 解像度: 2.92 Å | ||||||
![]() | Rutten, L. / Renault, L.L.R. / Juraszek, J. / Langedijk, J.P.M. | ||||||
![]() | ![]() タイトル: Stabilizing the closed SARS-CoV-2 spike trimer. 著者: Jarek Juraszek / Lucy Rutten / Sven Blokland / Pascale Bouchier / Richard Voorzaat / Tina Ritschel / Mark J G Bakkers / Ludovic L R Renault / Johannes P M Langedijk / ![]() 要旨: The trimeric spike (S) protein of SARS-CoV-2 is the primary focus of most vaccine design and development efforts. Due to intrinsic instability typical of class I fusion proteins, S tends to ...The trimeric spike (S) protein of SARS-CoV-2 is the primary focus of most vaccine design and development efforts. Due to intrinsic instability typical of class I fusion proteins, S tends to prematurely refold to the post-fusion conformation, compromising immunogenic properties and prefusion trimer yields. To support ongoing vaccine development efforts, we report the structure-based design of soluble S trimers with increased yields and stabilities, based on introduction of single point mutations and disulfide-bridges. We identify regions critical for stability: the heptad repeat region 1, the SD1 domain and position 614 in SD2. We combine a minimal selection of mostly interprotomeric mutations to create a stable S-closed variant with a 6.4-fold higher expression than the parental construct while no longer containing a heterologous trimerization domain. The cryo-EM structure reveals a correctly folded, predominantly closed pre-fusion conformation. Highly stable and well producing S protein and the increased understanding of S protein structure will support vaccine development and serological diagnostics. | ||||||
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構造の表示
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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 | ![]() | 504.5 KB | 表示 | ![]() |
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PDB形式 | ![]() | 396 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 | ![]() | 1.4 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.4 MB | 表示 | |
XML形式データ | ![]() | 81.7 KB | 表示 | |
CIF形式データ | ![]() | 128.3 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: 142547.344 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() ![]() ![]() 遺伝子: S, 2, S gene / 細胞株 (発現宿主): Expi293F / 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: 糖 | ChemComp-NAG / 研究の焦点であるリガンドがあるか | N | 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: S closed protein trimer / タイプ: ORGANELLE OR CELLULAR COMPONENT / Entity ID: #1 / 由来: RECOMBINANT | |||||||||||||||
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分子量 | 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: 7 | |||||||||||||||
緩衝液成分 |
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試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | |||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 295 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 / 倍率(補正後): 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): 600 nm / Calibrated defocus min: 400 nm / 最大 デフォーカス(補正後): 2700 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 | 電子線照射量: 65 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: 2 / 実像数: 9760 詳細: Movies with 50 frames were acquired in super resolution counting mode. |
電子光学装置 | 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 |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.18.2_3874: / 分類: 精密化 | ||||||||||||||||||||||||||||||||
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EMソフトウェア |
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画像処理 | 詳細: collected movies were subjected to beam induced drift correction using MotionCor2 and downsampled at this stage | ||||||||||||||||||||||||||||||||
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: 1391000 | ||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.92 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 184000 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: OTHER | ||||||||||||||||||||||||||||||||
拘束条件 |
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