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- PDB-9cgi: Cryo-EM structure of the Nipah Virus polymerase (L) protein in co... -

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Basic information

Entry
Database: PDB / ID: 9cgi
TitleCryo-EM structure of the Nipah Virus polymerase (L) protein in complex with the tetrameric phosphoprotein (P)
Components
  • Phosphoprotein
  • RNA-directed RNA polymerase L
KeywordsTRANSFERASE / VIRAL PROTEIN / Nipah virus / L protein / phosphoprotein / RNA-dependent RNA polymerase / PRNTase / GDP polyribonucleotidyl transferase / RNA capping / viral replication
Function / homology
Function and homology information


negative stranded viral RNA transcription / NNS virus cap methyltransferase / GDP polyribonucleotidyltransferase / negative stranded viral RNA replication / Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides / virion component / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / host cell cytoplasm / molecular adaptor activity / symbiont-mediated suppression of host innate immune response ...negative stranded viral RNA transcription / NNS virus cap methyltransferase / GDP polyribonucleotidyltransferase / negative stranded viral RNA replication / Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides / virion component / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / host cell cytoplasm / molecular adaptor activity / symbiont-mediated suppression of host innate immune response / RNA-directed RNA polymerase / RNA-dependent RNA polymerase activity / GTPase activity / virus-mediated perturbation of host defense response / ATP binding
Similarity search - Function
Phosphoprotein P region PNT disordered / Phosphoprotein P region PNT disordered / Paramyxovirus structural protein P/V, N-terminal domain / Paramyxovirus structural protein V/P N-terminus / Phosphoprotein P soyouz module / N-terminal region of Paramyxovirinae phosphoprotein (P) / RNA-directed RNA polymerase, paramyxovirus / P/V phosphoprotein, paramyxoviral / Paramyxovirus P/V phosphoprotein C-terminal / Mononegavirales RNA-directed RNA polymerase catalytic domain ...Phosphoprotein P region PNT disordered / Phosphoprotein P region PNT disordered / Paramyxovirus structural protein P/V, N-terminal domain / Paramyxovirus structural protein V/P N-terminus / Phosphoprotein P soyouz module / N-terminal region of Paramyxovirinae phosphoprotein (P) / RNA-directed RNA polymerase, paramyxovirus / P/V phosphoprotein, paramyxoviral / Paramyxovirus P/V phosphoprotein C-terminal / 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. / Ribosomal RNA methyltransferase, FtsJ domain / FtsJ-like methyltransferase
Similarity search - Domain/homology
RNA-directed RNA polymerase L / Phosphoprotein
Similarity search - Component
Biological speciesHenipavirus nipahense
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.92 Å
AuthorsLiu, B. / Yang, G. / Wang, D.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: Nat Commun / Year: 2024
Title: Structure of the Nipah virus polymerase phosphoprotein complex.
Authors: Ge Yang / Dong Wang / Bin Liu /
Abstract: The Nipah virus (NiV), a member of the Paramyxoviridae family, is notorious for its high fatality rate in humans. The RNA polymerase machinery of NiV, comprising the large protein L and the ...The Nipah virus (NiV), a member of the Paramyxoviridae family, is notorious for its high fatality rate in humans. The RNA polymerase machinery of NiV, comprising the large protein L and the phosphoprotein P, is essential for viral replication. This study presents the 2.9-Å cryo-electron microscopy structure of the NiV L-P complex, shedding light on its assembly and functionality. The structure not only demonstrates the molecular details of the conserved N-terminal domain, RNA-dependent RNA polymerase (RdRp), and GDP polyribonucleotidyltransferase of the L protein, but also the intact central oligomerization domain and the C-terminal X domain of the P protein. The P protein interacts extensively with the L protein, forming an antiparallel β-sheet among the P protomers and with the fingers subdomain of RdRp. The flexible linker domain of one P promoter extends its contact with the fingers subdomain to reach near the nascent RNA exit, highlighting the distinct characteristic of the NiV L-P interface. This distinctive tetrameric organization of the P protein and its interaction with the L protein provide crucial molecular insights into the replication and transcription mechanisms of NiV polymerase, ultimately contributing to the development of effective treatments and preventive measures against this Paramyxoviridae family deadly pathogen.
History
DepositionJun 29, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 18, 2024Provider: repository / Type: Initial release
Revision 1.1Oct 23, 2024Group: Data collection / Database references / Structure summary
Category: citation / citation_author ...citation / citation_author / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation_author.identifier_ORCID / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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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)571,1265
Polymers571,1265
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
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: 257565.156 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Henipavirus nipahense / Cell line (production host): Sf9 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: Q997F0, RNA-directed RNA polymerase, Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides, GDP polyribonucleotidyltransferase, NNS virus cap methyltransferase
#2: Protein
Phosphoprotein / Protein P


Mass: 78390.320 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Henipavirus nipahense / Gene: P/V/C / Cell line (production host): Sf9 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q9IK91
Has protein modificationY

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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: The Nipah virus L-P complex / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightValue: 0.65 MDa / Experimental value: YES
Source (natural)Organism: Henipavirus nipahense
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 8
Details: 50 mM Tris-HCl pH 8.0, 250 mM NaCl, 5% glycerol, 1 mM TCEP, and 4 mM MgCl2
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

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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 FIELD / Nominal magnification: 130000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Temperature (max): 77 K / Temperature (min): 63 K
Image recordingAverage exposure time: 1.7 sec. / Electron dose: 54.8 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 6114
Image scansWidth: 5760 / Height: 4092

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Processing

EM softwareName: PHENIX / Version: 1.21_5207: / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 3052781
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 2.92 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 278295 / Algorithm: SIMULTANEOUS ITERATIVE (SIRT) / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingB value: 73.5 / Protocol: OTHER / Space: REAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00415043
ELECTRON MICROSCOPYf_angle_d0.8520327
ELECTRON MICROSCOPYf_dihedral_angle_d5.2251979
ELECTRON MICROSCOPYf_chiral_restr0.0512309
ELECTRON MICROSCOPYf_plane_restr0.0062604

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