+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-28544 | |||||||||
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タイトル | Structure of SARS-CoV-1 Orf3a in late endosome/lysosome-like environment, MSP1D1 nanodisc | |||||||||
マップデータ | ||||||||||
試料 |
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キーワード | Membrane protein / SARS-CoV / SARS-CoV-2 / VIRAL PROTEIN | |||||||||
機能・相同性 | 機能・相同性情報 Maturation of protein 3a / cellular response to lipoprotein particle stimulus / Defective ABCA1 causes TGD / high-density lipoprotein particle receptor binding / Scavenging by Class B Receptors / HDL clearance / apolipoprotein receptor binding / spherical high-density lipoprotein particle / positive regulation of hydrolase activity / regulation of intestinal cholesterol absorption ...Maturation of protein 3a / cellular response to lipoprotein particle stimulus / Defective ABCA1 causes TGD / high-density lipoprotein particle receptor binding / Scavenging by Class B Receptors / HDL clearance / apolipoprotein receptor binding / spherical high-density lipoprotein particle / positive regulation of hydrolase activity / regulation of intestinal cholesterol absorption / negative regulation of response to cytokine stimulus / protein oxidation / vitamin transport / cholesterol import / high-density lipoprotein particle binding / HDL assembly / Microbial modulation of RIPK1-mediated regulated necrosis / negative regulation of heterotypic cell-cell adhesion / blood vessel endothelial cell migration / ABC transporters in lipid homeostasis / apolipoprotein A-I receptor binding / negative regulation of cytokine production involved in immune response / negative regulation of cell adhesion molecule production / negative regulation of very-low-density lipoprotein particle remodeling / peptidyl-methionine modification / phosphatidylcholine biosynthetic process / glucocorticoid metabolic process / acylglycerol homeostasis / Translation of Structural Proteins / SARS-CoV-1-mediated effects on programmed cell death / Virion Assembly and Release / Chylomicron remodeling / phosphatidylcholine-sterol O-acyltransferase activator activity / positive regulation of phospholipid efflux / Chylomicron assembly / positive regulation of cholesterol metabolic process / lipid storage / high-density lipoprotein particle clearance / chylomicron / phospholipid homeostasis / high-density lipoprotein particle remodeling / phospholipid efflux / cholesterol transfer activity / chemorepellent activity / reverse cholesterol transport / high-density lipoprotein particle assembly / cholesterol transport / very-low-density lipoprotein particle / low-density lipoprotein particle / lipoprotein biosynthetic process / positive regulation of CoA-transferase activity / high-density lipoprotein particle / regulation of Cdc42 protein signal transduction / triglyceride homeostasis / inorganic cation transmembrane transport / HDL remodeling / endothelial cell proliferation / Scavenging by Class A Receptors / cholesterol efflux / voltage-gated calcium channel complex / negative regulation of interleukin-1 beta production / positive regulation of Rho protein signal transduction / adrenal gland development / negative chemotaxis / cholesterol binding / cholesterol biosynthetic process / host cell Golgi membrane / endocytic vesicle / negative regulation of tumor necrosis factor-mediated signaling pathway / positive regulation of cholesterol efflux / Scavenging of heme from plasma / voltage-gated potassium channel complex / positive regulation of substrate adhesion-dependent cell spreading / Retinoid metabolism and transport / SARS-CoV-1 targets host intracellular signalling and regulatory pathways / positive regulation of phagocytosis / heat shock protein binding / positive regulation of stress fiber assembly / Attachment and Entry / endocytic vesicle lumen / cholesterol metabolic process / monoatomic ion channel activity / cholesterol homeostasis / integrin-mediated signaling pathway / Post-translational protein phosphorylation / regulation of protein phosphorylation / Heme signaling / PPARA activates gene expression / phospholipid binding / negative regulation of inflammatory response / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / SARS-CoV-1 activates/modulates innate immune responses / extracellular vesicle / Platelet degranulation / amyloid-beta binding / cytoplasmic vesicle / collagen-containing extracellular matrix / secretory granule lumen / blood microparticle / early endosome 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) / Severe acute respiratory syndrome coronavirus (SARS コロナウイルス) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.1 Å | |||||||||
データ登録者 | Miller AN / Houlihan PR / Matamala E / Cabezas-Bratesco D / Lee GY / Cristofori-Armstrong B / Dilan TL / Sanchez-Martinez S / Matthies D / Yan R ...Miller AN / Houlihan PR / Matamala E / Cabezas-Bratesco D / Lee GY / Cristofori-Armstrong B / Dilan TL / Sanchez-Martinez S / Matthies D / Yan R / Yu Z / Ren D / Brauchi SE / Clapham DE | |||||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: bioRxiv / 年: 2022 タイトル: The SARS-CoV-2 accessory protein Orf3a is not an ion channel, but does interact with trafficking proteins. 著者: Alexandria N Miller / Patrick R Houlihan / Ella Matamala / Deny Cabezas-Bratesco / Gi Young Lee / Ben Cristofori-Armstrong / Tanya L Dilan / Silvia Sanchez-Martinez / Doreen Matthies / Rui ...著者: Alexandria N Miller / Patrick R Houlihan / Ella Matamala / Deny Cabezas-Bratesco / Gi Young Lee / Ben Cristofori-Armstrong / Tanya L Dilan / Silvia Sanchez-Martinez / Doreen Matthies / Rui Yan / Zhiheng Yu / Dejian Ren / Sebastian E Brauchi / David E Clapham 要旨: The severe acute respiratory syndrome associated coronavirus 2 (SARS-CoV-2) and SARS-CoV-1 accessory protein Orf3a colocalizes with markers of the plasma membrane, endocytic pathway, and Golgi ...The severe acute respiratory syndrome associated coronavirus 2 (SARS-CoV-2) and SARS-CoV-1 accessory protein Orf3a colocalizes with markers of the plasma membrane, endocytic pathway, and Golgi apparatus. Some reports have led to annotation of both Orf3a proteins as a viroporin. Here we show that neither SARS-CoV-2 nor SARS-CoV-1 form functional ion conducting pores and that the conductances measured are common contaminants in overexpression and with high levels of protein in reconstitution studies. Cryo-EM structures of both SARS-CoV-2 and SARS-CoV-1 Orf3a display a narrow constriction and the presence of a basic aqueous vestibule, which would not favor cation permeation. We observe enrichment of the late endosomal marker Rab7 upon SARS-CoV-2 Orf3a overexpression, and co-immunoprecipitation with VPS39. Interestingly, SARS-CoV-1 Orf3a does not cause the same cellular phenotype as SARS-CoV-2 Orf3a and does not interact with VPS39. To explain this difference, we find that a divergent, unstructured loop of SARS-CoV-2 Orf3a facilitates its binding with VPS39, a HOPS complex tethering protein involved in late endosome and autophagosome fusion with lysosomes. We suggest that the added loop enhances SARS-CoV-2 Orf3a ability to co-opt host cellular trafficking mechanisms for viral exit or host immune evasion. | |||||||||
履歴 |
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-構造の表示
添付画像 |
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-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_28544.map.gz | 4.7 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-28544-v30.xml emd-28544.xml | 19 KB 19 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_28544.png | 108.3 KB | ||
Filedesc metadata | emd-28544.cif.gz | 6.2 KB | ||
その他 | emd_28544_half_map_1.map.gz emd_28544_half_map_2.map.gz | 48.5 MB 48.5 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-28544 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-28544 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_28544_validation.pdf.gz | 683.6 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_28544_full_validation.pdf.gz | 683.1 KB | 表示 | |
XML形式データ | emd_28544_validation.xml.gz | 12.1 KB | 表示 | |
CIF形式データ | emd_28544_validation.cif.gz | 14.3 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-28544 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-28544 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_28544.map.gz / 形式: CCP4 / 大きさ: 64 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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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: 0.844 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: #2
ファイル | emd_28544_half_map_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: #1
ファイル | emd_28544_half_map_2.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
-全体 : Structure of SARS-CoV-1 Orf3a in late endosome/lysosome-like envi...
全体 | 名称: Structure of SARS-CoV-1 Orf3a in late endosome/lysosome-like environment, MSP1D1 nanodisc |
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要素 |
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-超分子 #1: Structure of SARS-CoV-1 Orf3a in late endosome/lysosome-like envi...
超分子 | 名称: Structure of SARS-CoV-1 Orf3a in late endosome/lysosome-like environment, MSP1D1 nanodisc タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#2 |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
-分子 #1: ORF3a protein
分子 | 名称: ORF3a protein / タイプ: protein_or_peptide / ID: 1 / コピー数: 2 / 光学異性体: LEVO |
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由来(天然) | 生物種: Severe acute respiratory syndrome coronavirus (SARS コロナウイルス) |
分子量 | 理論値: 36.268219 KDa |
組換発現 | 生物種: Homo sapiens (ヒト) |
配列 | 文字列: MDLFMRFFTL GSITAQPVKI DNASPASTVH ATATIPLQAS LPFGWLVIGV AFLAVFQSAT KIIALNKRWQ LALYKGFQFI CNLLLLFVT IYSHLLLVAA GMEAQFLYLY ALIYFLQCIN ACRIIMRCWL CWKCKSKNPL LYDANYFVCW HTHNYDYCIP Y NSVTDTIV ...文字列: MDLFMRFFTL GSITAQPVKI DNASPASTVH ATATIPLQAS LPFGWLVIGV AFLAVFQSAT KIIALNKRWQ LALYKGFQFI CNLLLLFVT IYSHLLLVAA GMEAQFLYLY ALIYFLQCIN ACRIIMRCWL CWKCKSKNPL LYDANYFVCW HTHNYDYCIP Y NSVTDTIV VTEGDGISTP KLKEDYQIGG YSEDRHSGVK DYVVVHGYFT EVYYQLESTQ ITTDTGIENA TFFIFNKLVK DP PNVQIHT IDGSSGVANP AMDPIYDEPT TTTSVPLGGR GLEVLFQGPG SGQLVGSGGL EGGGGWSHPQ FEKGGGSGGG SGG GSWSHP QFEK UniProtKB: ORF3a protein |
-分子 #2: Apolipoprotein A-I
分子 | 名称: Apolipoprotein A-I / タイプ: protein_or_peptide / ID: 2 / コピー数: 2 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 24.704729 KDa |
組換発現 | 生物種: Escherichia coli (大腸菌) |
配列 | 文字列: GHHHHHHHDY DIPTTENLYF QGSTFSKLRE QLGPVTQEFW DNLEKETEGL RQEMSKDLEE VKAKVQPYLD DFQKKWQEEM ELYRQKVEP LRAELQEGAR QKLHELQEKL SPLGEEMRDR ARAHVDALRT HLAPYSDELR QRLAARLEAL KENGGARLAE Y HAKATEHL ...文字列: GHHHHHHHDY DIPTTENLYF QGSTFSKLRE QLGPVTQEFW DNLEKETEGL RQEMSKDLEE VKAKVQPYLD DFQKKWQEEM ELYRQKVEP LRAELQEGAR QKLHELQEKL SPLGEEMRDR ARAHVDALRT HLAPYSDELR QRLAARLEAL KENGGARLAE Y HAKATEHL STLSEKAKPA LEDLRQGLLP VLESFKVSFL SALEEYTKKL NTQ UniProtKB: Apolipoprotein A-I |
-分子 #3: 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine
分子 | 名称: 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine / タイプ: ligand / ID: 3 / コピー数: 2 / 式: PEE |
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分子量 | 理論値: 744.034 Da |
Chemical component information | ChemComp-PEE: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 7.5 |
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凍結 | 凍結剤: ETHANE |
-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 Bioquantum |
撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 撮影したグリッド数: 1 / 実像数: 13970 / 平均電子線量: 50.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 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 |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
初期モデル | モデルのタイプ: PDB ENTRY PDBモデル - PDB ID: |
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最終 再構成 | 使用したクラス数: 1 / 想定した対称性 - 点群: C2 (2回回転対称) / 解像度のタイプ: BY AUTHOR / 解像度: 3.1 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: RELION (ver. 3.1) / 使用した粒子像数: 162607 |
初期 角度割当 | タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: cryoSPARC (ver. 3.0) |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: RELION (ver. 3.1) |
-原子モデル構築 1
精密化 | プロトコル: AB INITIO MODEL |
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得られたモデル | PDB-8eqs: |