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基本情報
登録情報 | データベース: PDB / ID: 7m4r | ||||||
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タイトル | Structural basis for SARS-CoV-2 envelope protein in recognition of human cell junction protein PALS1 | ||||||
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![]() | CELL ADHESION/VIRAL PROTEIN / SARS-CoV-2 envelope protein / PDZ-binding motif / complex / pathogen-host interaction / CELL ADHESION-VIRAL PROTEIN complex | ||||||
機能・相同性 | ![]() disruption of cellular anatomical structure in another organism / protein localization to myelin sheath abaxonal region / SARS-CoV-1 targets PDZ proteins in cell-cell junction / viral budding from Golgi membrane / establishment or maintenance of polarity of embryonic epithelium / myelin assembly / morphogenesis of an epithelial sheet / Tight junction interactions / SARS-CoV-2 targets PDZ proteins in cell-cell junction / cytoplasmic capsid assembly ...disruption of cellular anatomical structure in another organism / protein localization to myelin sheath abaxonal region / SARS-CoV-1 targets PDZ proteins in cell-cell junction / viral budding from Golgi membrane / establishment or maintenance of polarity of embryonic epithelium / myelin assembly / morphogenesis of an epithelial sheet / Tight junction interactions / SARS-CoV-2 targets PDZ proteins in cell-cell junction / cytoplasmic capsid assembly / lateral loop / myelin sheath adaxonal region / regulation of transforming growth factor beta receptor signaling pathway / Regulation of gap junction activity / Schmidt-Lanterman incisure / peripheral nervous system myelin maintenance / establishment or maintenance of epithelial cell apical/basal polarity / apical junction complex / generation of neurons / central nervous system neuron development / host cell Golgi membrane / endoplasmic reticulum-Golgi intermediate compartment / bicellular tight junction / Maturation of protein E / endoplasmic reticulum-Golgi intermediate compartment membrane / protein localization to plasma membrane / adherens junction / cerebral cortex development / monoatomic ion channel activity / gene expression / perikaryon / Translation of Structural Proteins / Virion Assembly and Release / Induction of Cell-Cell Fusion / structural constituent of virion / Attachment and Entry / apical plasma membrane / protein domain specific binding / axon / SARS-CoV-2 activates/modulates innate and adaptive immune responses / virion membrane / Golgi apparatus / protein-containing complex / extracellular exosome / ATP binding / identical protein binding / membrane / plasma membrane / cytoplasm 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: 3.65 Å | ||||||
![]() | Liu, Q. / Chai, J. | ||||||
![]() | ![]() タイトル: Structural basis for SARS-CoV-2 envelope protein recognition of human cell junction protein PALS1. 著者: Jin Chai / Yuanheng Cai / Changxu Pang / Liguo Wang / Sean McSweeney / John Shanklin / Qun Liu / ![]() 要旨: The COVID-19 pandemic, caused by the SARS-CoV-2 virus, has created global health and economic emergencies. SARS-CoV-2 viruses promote their own spread and virulence by hijacking human proteins, which ...The COVID-19 pandemic, caused by the SARS-CoV-2 virus, has created global health and economic emergencies. SARS-CoV-2 viruses promote their own spread and virulence by hijacking human proteins, which occurs through viral protein recognition of human targets. To understand the structural basis for SARS-CoV-2 viral-host protein recognition, here we use cryo-electron microscopy (cryo-EM) to determine a complex structure of the human cell junction protein PALS1 and SARS-CoV-2 viral envelope (E) protein. Our reported structure shows that the E protein C-terminal DLLV motif recognizes a pocket formed exclusively by hydrophobic residues from the PDZ and SH3 domains of PALS1. Our structural analysis provides an explanation for the observation that the viral E protein recruits PALS1 from lung epithelial cell junctions. In addition, our structure provides novel targets for peptide- and small-molecule inhibitors that could block the PALS1-E interactions to reduce E-mediated virulence. | ||||||
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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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PDBx/mmCIF形式 | ![]() | 164.5 KB | 表示 | ![]() |
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-検証レポート
文書・要旨 | ![]() | 811.2 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 817.5 KB | 表示 | |
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CIF形式データ | ![]() | 40.1 KB | 表示 | |
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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
#1: タンパク質 | 分子量: 44780.504 Da / 分子数: 2 / 断片: UNP residues 236-410,461-675 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #2: タンパク質・ペプチド | | 分子量: 2062.395 Da / 分子数: 1 / 断片: UNP residues 58-75 / 由来タイプ: 合成 由来: (合成) ![]() ![]() 参照: UniProt: P0DTC4 |
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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: Complex structure of SARS-CoV-2 envelope protein Ec18 and human PALS1 PSG domains タイプ: COMPLEX / Entity ID: all / 由来: MULTIPLE SOURCES |
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由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.5 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
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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 |
撮影 | 電子線照射量: 64 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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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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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.65 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 47615 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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