+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-31077 | |||||||||
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タイトル | Structure of Rift Valley fever virus RNA-dependent RNA polymerase | |||||||||
マップデータ | ||||||||||
試料 |
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キーワード | Polymerase / Complex / Replicate / VIRAL PROTEIN | |||||||||
機能・相同性 | 機能・相同性情報 nucleoside binding / host cell endoplasmic reticulum / virion component / host cell endoplasmic reticulum-Golgi intermediate compartment / host cell Golgi apparatus / 加水分解酵素; エステル加水分解酵素 / hydrolase activity / RNA-directed RNA polymerase / viral RNA genome replication / RNA-dependent RNA polymerase activity ...nucleoside binding / host cell endoplasmic reticulum / virion component / host cell endoplasmic reticulum-Golgi intermediate compartment / host cell Golgi apparatus / 加水分解酵素; エステル加水分解酵素 / hydrolase activity / RNA-directed RNA polymerase / viral RNA genome replication / RNA-dependent RNA polymerase activity / DNA-templated transcription / metal ion binding 類似検索 - 分子機能 | |||||||||
生物種 | Rift Valley fever virus (リフトバレー熱ウイルス) / Rift valley fever virus (リフトバレー熱ウイルス) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.6 Å | |||||||||
データ登録者 | Wang X / Hu CX | |||||||||
資金援助 | 中国, 1件
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引用 | ジャーナル: J Virol / 年: 2022 タイトル: Structure of Rift Valley Fever Virus RNA-Dependent RNA Polymerase. 著者: Xue Wang / Cuixia Hu / Wei Ye / Jia Wang / Xiaofei Dong / Jie Xu / Xiaorong Li / Manfeng Zhang / Hongyun Lu / Fanglin Zhang / Wei Wu / Shaodong Dai / Hong-Wei Wang / Zhongzhou Chen / 要旨: Rift Valley fever virus (RVFV) belongs to the order and is the type species of genus , which accounts for over 50% of family species. RVFV is mosquito-borne and causes severe diseases in both ...Rift Valley fever virus (RVFV) belongs to the order and is the type species of genus , which accounts for over 50% of family species. RVFV is mosquito-borne and causes severe diseases in both humans and livestock, and consists of three segments (S, M, L) in the genome. The L segment encodes an RNA-dependent RNA polymerase (RdRp, L protein) that is responsible for facilitating the replication and transcription of the virus. It is essential for the virus and has multiple drug targets. Here, we established an expression system and purification procedures for full-length L protein, which is composed of an endonuclease domain, RdRp domain, and cap-binding domain. A cryo-EM L protein structure was reported at 3.6 Å resolution. In this first L protein structure of genus , the priming loop of RVFV L protein is distinctly different from those of other L proteins and undergoes large movements related to its replication role. Structural and biochemical analyses indicate that a single template can induce initiation of RNA synthesis, which is notably enhanced by 5' viral RNA. These findings help advance our understanding of the mechanism of RNA synthesis and provide an important basis for developing antiviral inhibitors. The zoonosis RVF virus (RVFV) is one of the most serious arbovirus threats to both human and animal health. RNA-dependent RNA polymerase (RdRp) is a multifunctional enzyme catalyzing genome replication as well as viral transcription, so the RdRp is essential for studying the virus and has multiple drug targets. In our study, we report the structure of RVFV L protein at 3.6 Å resolution by cryo-EM. This is the first L protein structure of genus . Strikingly, a single template can initiate RNA replication. The structure and assays provide a comprehensive and in-depth understanding of the catalytic and substrate recognition mechanism of RdRp. | |||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_31077.map.gz | 2.1 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-31077-v30.xml emd-31077.xml | 11.1 KB 11.1 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_31077_fsc.xml | 5.8 KB | 表示 | FSCデータファイル |
画像 | emd_31077.png | 19.1 KB | ||
Filedesc metadata | emd-31077.cif.gz | 6.1 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-31077 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-31077 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_31077_validation.pdf.gz | 422.2 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_31077_full_validation.pdf.gz | 421.8 KB | 表示 | |
XML形式データ | emd_31077_validation.xml.gz | 8.7 KB | 表示 | |
CIF形式データ | emd_31077_validation.cif.gz | 11.1 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-31077 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-31077 | 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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-マップ
ファイル | ダウンロード / ファイル: emd_31077.map.gz / 形式: CCP4 / 大きさ: 15.6 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: 1.08 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-試料の構成要素
-全体 : Structural insights into Rift Valley fever virus replication machinery
全体 | 名称: Structural insights into Rift Valley fever virus replication machinery |
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要素 |
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-超分子 #1: Structural insights into Rift Valley fever virus replication machinery
超分子 | 名称: Structural insights into Rift Valley fever virus replication machinery タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all |
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由来(天然) | 生物種: Rift Valley fever virus (リフトバレー熱ウイルス) |
分子量 | 理論値: 238 KDa |
-分子 #1: Replicase
分子 | 名称: Replicase / タイプ: protein_or_peptide / ID: 1 / コピー数: 1 / 光学異性体: LEVO / EC番号: RNA-directed RNA polymerase |
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由来(天然) | 生物種: Rift valley fever virus (リフトバレー熱ウイルス) |
分子量 | 理論値: 202.260734 KDa |
組換発現 | 生物種: Pichia aff. alni PL5W1 (菌類) |
配列 | 文字列: GKTERELLAM VSSIQINWSV TESVFPPFSR EMFDRFRSSP PDSEYITRIV SRCLINSQEK LINSSFFAEG NDKALRFSKN AEECSLAVE RALNQYRAED NLRDLNDHSS TIQLPPWLSY HDVDGKDLCP LQGLDVRGDH PMCNLWREVV TSANLEEIER M HDDAAAEL ...文字列: GKTERELLAM VSSIQINWSV TESVFPPFSR EMFDRFRSSP PDSEYITRIV SRCLINSQEK LINSSFFAEG NDKALRFSKN AEECSLAVE RALNQYRAED NLRDLNDHSS TIQLPPWLSY HDVDGKDLCP LQGLDVRGDH PMCNLWREVV TSANLEEIER M HDDAAAEL EFALSGVKDR PDERNRYHRV HLNMGSDDSV YIAALGVNGK KHKADTLVQQ MRDRSKQPFS PDHDVDHISE FL SACSSDL WATDEDLYNP LSCDKELRLA AQRIHQPSLS ERGFNEIITE HYKFMGSRIG SWCQMVSLIG AELSASVKQH VKP NYFVIK RLLGSGIFLL IKPTSSKSHI FVSFAIKRSC WAFDLSTSRV FKPYIDAGDL LVTDFVSYKL SKLTNLCKCV SLME SSFSF WAEAFGIPSW NFVGDLFRSS DSAAMDASYM GKLSLLTLLE DKAATEELQT IARYIIMEGF VSPPEIPKPH KMTSK FPKV LRSELQVYLL NCLCRTIQRI AGEPFILKKK DGSISWGGMF NPFSGRPLLD MQPLISCCYN GYFKNKEEET EPSSLS GMY KKIIELEHLR PQSDAFLGYK DPELPRMHEF SVSYLKEACN HAKLVLRSLY GQNFMEQIDN QIIRELSGLT LERLATL KA TSNFNENWYV YKDVADKNYT RDKLLVKMSK YASEGKSLAI QKFEDCMRQI ESQGCMHICL FKKQQHGGLR EIYVMGAE E RIVQSVVETI ARSIGKFFAS DTLCNPPNKV KIPETHGIRA RKQCKGPVWT CATSDDARKW NQGHFVTKFA LMLCEFTSP KWWPLIIRGC SMFTRKRMMM NLNYLKILDG HRELDIRDDF VMDLFKAYHG EAEVPWAFKG KTYLETTTGM MQGILHYTSS LLHTIHQEY IRSLSFKIFN LKVAPEMSKG LVCDMMQGSD DSSMLISFPA DDEKVLTRCK VAAAICFRMK KELGVYLAIY P SEKSTANT DFVMEYNSEF YFHTQHVRPT IRWIAACCSL PEVETLVARQ EEASNLMTSV TEGGGSFSLA AMIQQAQCTL HY MLMGMGV SELFLEYKKA VLKWNDPGLG FFLLDNPYAC GLGGFRFNLF KAITRTDLQK LYAFFMKKVK GSAARDWADE DVT IPETCS VSPGGALILS SSLKWGSRKK FQKLRDRLNI PENWIELINE NPEVLYRAPR TGPEILLRIA EKVHSPGVVS SLSS GNAVC KVMASAVYFL SATIFEDTGR PEFNFLEDSK YSLLQKMAAY SGFHGFNDME PEDILFLFPN IEELESLDSI VYNKG EIDI IPRVNIRDAT QTRVTIFNEQ KTLRTSPEKL VSDKWFGTQK SRIGKTTFLA EWEKLKKIVK WLEDTPEATL AHTPLN NHI QVRNFFARME SKPRTVRITG APVKKRSGVS KIAMVIRDNF SRMGHLRGVE DLAGFTRSVS AEILKHFLFC ILQGPYS ES YKLQLIYRVL SSVSNVEIKE SDGKTKTNLI GILQRFLDGD HVVPIIEEMG AGTVGGFIKR QQSKVVQNKV VYYGVGIW R GFMDGYQVHL EIENDIGQPP RLRNVTTNCQ SSPWDLSIPI RQWAEDMGVT NNQDYSSKSS RGARYWMHSF RMQGPSKPF GCPVYIIKGD MSDVIRLRKE EVEMKVRGST LNLYTKHHSH QDLHILSYTA SDNDLSPGIF KSISDEGVAQ ALQLFEREPS NCWVRCESV APKFISAILE ICEGKRQIRG INRTRLSEIV RICSESSLRS KVGSMFSFVA NVEEAHDVDY DALMDLMIED A KNNAFSHV VDCIELDV UniProtKB: RNA-directed RNA polymerase L |
-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 | 3D array |
-試料調製
濃度 | 0.5 mg/mL |
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緩衝液 | pH: 8.5 |
凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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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: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |