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- PDB-6pzk: Cryo-EM Structure of the Respiratory Syncytial Virus Polymerase (... -

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Basic information

Entry
Database: PDB / ID: 6pzk
TitleCryo-EM Structure of the Respiratory Syncytial Virus Polymerase (L) Protein Bound by the Tetrameric Phosphoprotein (P)
Components
  • Phosphoprotein
  • RNA-directed RNA polymerase L
KeywordsVIRAL PROTEIN / RNA-binding protein / RSV / RdRp / RNA-dependent RNA polymerase / PRNTase / polyribonucleotidyl transferase / RNA capping / viral replication
Function / homology
Function and homology information


NNS virus cap methyltransferase / GDP polyribonucleotidyltransferase / negative stranded viral RNA replication / Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides / viral life cycle / virion component / : / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / host cell cytoplasm / RNA-directed RNA polymerase ...NNS virus cap methyltransferase / GDP polyribonucleotidyltransferase / negative stranded viral RNA replication / Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides / viral life cycle / virion component / : / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / host cell cytoplasm / RNA-directed RNA polymerase / RNA-dependent RNA polymerase activity / GTPase activity / ATP binding / metal ion binding
Similarity search - Function
RNA-directed RNA polymerase, paramyxovirus / Phosphoprotein, pneumoviral / Pneumovirus phosphoprotein / RNA-directed RNA polymerase L methyltransferase domain, rhabdovirus / Virus-capping methyltransferase, MT domain / Mononegavirales RNA-directed RNA polymerase catalytic domain / Mononegavirus L protein 2-O-ribose methyltransferase / Mononegavirales mRNA-capping domain V / RNA-directed RNA polymerase L, C-terminal / Mononegavirales RNA dependent RNA polymerase ...RNA-directed RNA polymerase, paramyxovirus / Phosphoprotein, pneumoviral / Pneumovirus phosphoprotein / RNA-directed RNA polymerase L methyltransferase domain, rhabdovirus / Virus-capping methyltransferase, MT domain / Mononegavirales RNA-directed RNA polymerase catalytic domain / Mononegavirus L protein 2-O-ribose methyltransferase / Mononegavirales mRNA-capping domain V / RNA-directed RNA polymerase L, C-terminal / Mononegavirales RNA dependent RNA polymerase / Mononegavirales mRNA-capping region V / RdRp of negative ssRNA viruses with non-segmented genomes catalytic domain profile. / Mononegavirus L protein 2'-O-ribose methyltransferase domain profile.
Similarity search - Domain/homology
Phosphoprotein / RNA-directed RNA polymerase L
Similarity search - Component
Biological speciesHuman respiratory syncytial virus A2
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsGilman, M.S.A. / McLellan, J.S.
CitationJournal: Cell / Year: 2019
Title: Structure of the Respiratory Syncytial Virus Polymerase Complex.
Authors: Morgan S A Gilman / Cheng Liu / Amy Fung / Ishani Behera / Paul Jordan / Peter Rigaux / Nina Ysebaert / Sergey Tcherniuk / Julien Sourimant / Jean-François Eléouët / Priscila Sutto-Ortiz ...Authors: Morgan S A Gilman / Cheng Liu / Amy Fung / Ishani Behera / Paul Jordan / Peter Rigaux / Nina Ysebaert / Sergey Tcherniuk / Julien Sourimant / Jean-François Eléouët / Priscila Sutto-Ortiz / Etienne Decroly / Dirk Roymans / Zhinan Jin / Jason S McLellan /
Abstract: Numerous interventions are in clinical development for respiratory syncytial virus (RSV) infection, including small molecules that target viral transcription and replication. These processes are ...Numerous interventions are in clinical development for respiratory syncytial virus (RSV) infection, including small molecules that target viral transcription and replication. These processes are catalyzed by a complex comprising the RNA-dependent RNA polymerase (L) and the tetrameric phosphoprotein (P). RSV P recruits multiple proteins to the polymerase complex and, with the exception of its oligomerization domain, is thought to be intrinsically disordered. Despite their critical roles in RSV transcription and replication, structures of L and P have remained elusive. Here, we describe the 3.2-Å cryo-EM structure of RSV L bound to tetrameric P. The structure reveals a striking tentacular arrangement of P, with each of the four monomers adopting a distinct conformation. The structure also rationalizes inhibitor escape mutants and mutations observed in live-attenuated vaccine candidates. These results provide a framework for determining the molecular underpinnings of RSV replication and transcription and should facilitate the design of effective RSV inhibitors.
History
DepositionAug 1, 2019Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 11, 2019Provider: repository / Type: Initial release
Revision 1.1Oct 2, 2019Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.journal_abbrev / _citation.journal_id_CSD ..._citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.name
Revision 1.2Mar 20, 2024Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Assembly

Deposited unit
A: RNA-directed RNA polymerase L
B: Phosphoprotein
C: Phosphoprotein
D: Phosphoprotein
E: Phosphoprotein


Theoretical massNumber of molelcules
Total (without water)370,7345
Polymers370,7345
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein RNA-directed RNA polymerase L / Protein L / Large structural protein / Replicase / Transcriptase


Mass: 254482.750 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human respiratory syncytial virus A2 / Strain: A2 / Cell line (production host): Sf9 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: P28887, RNA-directed RNA polymerase, mRNA (guanine-N7)-methyltransferase, Transferases; Transferring phosphorus-containing groups; Nucleotidyltransferases, GDP polyribonucleotidyltransferase
#2: Protein
Phosphoprotein / / Protein P


Mass: 29062.895 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human respiratory syncytial virus A2 / Strain: A2 / Cell line (production host): Sf9 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P03421

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Respiratory Syncytial Virus Polymerase (L) Protein Bound by the Tetrameric Phosphoprotein (P)
Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightValue: 0.37 MDa / Experimental value: NO
Source (natural)Organism: Human respiratory syncytial virus A2
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 8
Buffer component
IDConc.NameFormulaBuffer-ID
135 mMTris-HClTrisNH2C(CH2OH)3-HCl1
2350 mMsodium chlorideNaClSodium chloride1
30.5 mMTCEPC9H15O6P-HCl1
45 %glycerolC3H8O31
SpecimenConc.: 0.29 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy
Image recordingElectron dose: 48 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

EM software
IDNameCategory
1cryoSPARCparticle selection
10cryoSPARCinitial Euler assignment
11cryoSPARCfinal Euler assignment
13cryoSPARC3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 196720 / Symmetry type: POINT

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