+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6qpf | ||||||||||||
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タイトル | Influenza A virus Polymerase Heterotrimer A/duck/Fujian/01/2002(H5N1) | ||||||||||||
要素 |
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キーワード | RNA BINDING PROTEIN / Influenza A / RNA polymerase / Influenza polymerase / Influenza dimer / RDRP | ||||||||||||
機能・相同性 | 機能・相同性情報 virion component => GO:0044423 / viral transcription / symbiont-mediated suppression of host mRNA transcription via inhibition of RNA polymerase II activity / host cell mitochondrion / 7-methylguanosine mRNA capping / cap snatching / endonuclease activity / host cell cytoplasm / 加水分解酵素; エステル加水分解酵素 / RNA-directed RNA polymerase ...virion component => GO:0044423 / viral transcription / symbiont-mediated suppression of host mRNA transcription via inhibition of RNA polymerase II activity / host cell mitochondrion / 7-methylguanosine mRNA capping / cap snatching / endonuclease activity / host cell cytoplasm / 加水分解酵素; エステル加水分解酵素 / RNA-directed RNA polymerase / viral RNA genome replication / RNA-dependent RNA polymerase activity / DNA-templated transcription / nucleotide binding / host cell nucleus / RNA binding / metal ion binding / cytoplasm 類似検索 - 分子機能 | ||||||||||||
生物種 | Influenza A virus (A型インフルエンザウイルス) | ||||||||||||
手法 | X線回折 / シンクロトロン / 分子置換 / 解像度: 3.634 Å | ||||||||||||
データ登録者 | Fan, H.T. / Keown, J.R. / Fodor, E. / Grimes, J.M. | ||||||||||||
資金援助 | 英国, 3件
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引用 | ジャーナル: Nature / 年: 2019 タイトル: Structures of influenza A virus RNA polymerase offer insight into viral genome replication. 著者: Haitian Fan / Alexander P Walker / Loïc Carrique / Jeremy R Keown / Itziar Serna Martin / Dimple Karia / Jane Sharps / Narin Hengrung / Els Pardon / Jan Steyaert / Jonathan M Grimes / Ervin Fodor / 要旨: Influenza A viruses are responsible for seasonal epidemics, and pandemics can arise from the transmission of novel zoonotic influenza A viruses to humans. Influenza A viruses contain a segmented ...Influenza A viruses are responsible for seasonal epidemics, and pandemics can arise from the transmission of novel zoonotic influenza A viruses to humans. Influenza A viruses contain a segmented negative-sense RNA genome, which is transcribed and replicated by the viral-RNA-dependent RNA polymerase (FluPol) composed of PB1, PB2 and PA subunits. Although the high-resolution crystal structure of FluPol of bat influenza A virus has previously been reported, there are no complete structures available for human and avian FluPol. Furthermore, the molecular mechanisms of genomic viral RNA (vRNA) replication-which proceeds through a complementary RNA (cRNA) replicative intermediate, and requires oligomerization of the polymerase-remain largely unknown. Here, using crystallography and cryo-electron microscopy, we determine the structures of FluPol from human influenza A/NT/60/1968 (H3N2) and avian influenza A/duck/Fujian/01/2002 (H5N1) viruses at a resolution of 3.0-4.3 Å, in the presence or absence of a cRNA or vRNA template. In solution, FluPol forms dimers of heterotrimers through the C-terminal domain of the PA subunit, the thumb subdomain of PB1 and the N1 subdomain of PB2. The cryo-electron microscopy structure of monomeric FluPol bound to the cRNA template reveals a binding site for the 3' cRNA at the dimer interface. We use a combination of cell-based and in vitro assays to show that the interface of the FluPol dimer is required for vRNA synthesis during replication of the viral genome. We also show that a nanobody (a single-domain antibody) that interferes with FluPol dimerization inhibits the synthesis of vRNA and, consequently, inhibits virus replication in infected cells. Our study provides high-resolution structures of medically relevant FluPol, as well as insights into the replication mechanisms of the viral RNA genome. In addition, our work identifies sites in FluPol that could be targeted in the development of antiviral drugs. | ||||||||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 6qpf.cif.gz | 1.6 MB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6qpf.ent.gz | 1.3 MB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6qpf.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 6qpf_validation.pdf.gz | 580.5 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6qpf_full_validation.pdf.gz | 772.9 KB | 表示 | |
XML形式データ | 6qpf_validation.xml.gz | 294.7 KB | 表示 | |
CIF形式データ | 6qpf_validation.cif.gz | 386.2 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/qp/6qpf ftp://data.pdbj.org/pub/pdb/validation_reports/qp/6qpf | HTTPS FTP |
-関連構造データ
関連構造データ | 4660C 4661C 4663C 4664C 4666C 4986C 6qnwC 6qpgC 6qwlC 6qx3C 6qx8C 6qxeC 6rr7C 5d98S S: 精密化の開始モデル C: 同じ文献を引用 (文献) |
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類似構造データ |
-リンク
-集合体
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非結晶学的対称性 (NCS) | NCSドメイン:
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