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- PDB-9ir3: Cryo-EM structure of Nipah virus L-P polymerase complex -

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Basic information

Entry
Database: PDB / ID: 9ir3
TitleCryo-EM structure of Nipah virus L-P polymerase complex
Components
  • Phosphoprotein
  • RNA-directed RNA polymerase L
KeywordsTRANSCRIPTION / NiV / polymerase / replication / cryo-EM
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 / molecular adaptor activity / host cell cytoplasm / mRNA 5'-cap (guanine-N7-)-methyltransferase 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 / molecular adaptor activity / host cell cytoplasm / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / symbiont-mediated suppression of host innate immune response / RNA-directed RNA polymerase / RNA-directed RNA polymerase activity / GTPase activity / 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 / Mononegavirus L protein 2-O-ribose methyltransferase ...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 / Mononegavirus L protein 2-O-ribose methyltransferase / RNA-directed RNA polymerase L, C-terminal / Mononegavirus L protein 2'-O-ribose methyltransferase domain profile. / Mononegavirales RNA-directed RNA polymerase catalytic domain / Mononegavirales mRNA-capping domain V / Mononegavirales RNA dependent RNA polymerase / Mononegavirales mRNA-capping region V / RdRp of negative ssRNA viruses with non-segmented genomes catalytic domain profile. / Ribosomal RNA methyltransferase, FtsJ domain / FtsJ-like methyltransferase
Similarity search - Domain/homology
RNA-directed RNA polymerase L / Phosphoprotein
Similarity search - Component
Biological speciesNipah virus
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.19 Å
AuthorsShi, Y. / Peng, Q.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: Nat Commun / Year: 2024
Title: Cryo-EM structure of Nipah virus L-P polymerase complex.
Authors: Qi Peng / Yingying Dong / Mingzhu Jia / Qiannv Liu / Yuhai Bi / Jianxun Qi / Yi Shi /
Abstract: Nipah virus (NiV) is a non-segmented, negative-strand (NNS) RNA virus, belonging to Paramyxoviridae. The RNA polymerase complex, composed of large (L) protein and tetrameric phosphoprotein (P), is ...Nipah virus (NiV) is a non-segmented, negative-strand (NNS) RNA virus, belonging to Paramyxoviridae. The RNA polymerase complex, composed of large (L) protein and tetrameric phosphoprotein (P), is responsible for genome transcription and replication by catalyzing NTP polymerization, mRNA capping and cap methylation. Here, we determine the cryo-electron microscopy (cryo-EM) structure of fully bioactive NiV L-P polymerase complex at a resolution of 3.19 Å. The L-P complex displays a conserved architecture like other NNS RNA virus polymerases and L interacts with the oligomerization domain and the extreme C-terminus region of P tetramer. Moreover, we elucidate that NiV is naturally resistant to the allosteric L-targeting inhibitor GHP-88309 due to the conformational change in the drug binding site. We also find that the non-nucleotide drug suramin can inhibit the NiV L-P polymerase activity at both the enzymatic and cellular levels. Our findings have greatly enhanced the molecular understanding of NiV genome replication and transcription and provided the rationale for broad-spectrum polymerase-targeted drug design.
History
DepositionJul 13, 2024Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Dec 11, 2024Provider: repository / Type: Initial release
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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: RNA-directed RNA polymerase L
C: Phosphoprotein
D: Phosphoprotein
E: Phosphoprotein
F: Phosphoprotein
G: Phosphoprotein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)649,6488
Polymers649,5176
Non-polymers1312
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.) Nipah virus / Gene: L / Production host: Spodoptera (butterflies/moths)
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.: 5
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Nipah virus / Gene: P/V/C / Production host: Spodoptera (butterflies/moths) / References: UniProt: Q9IK91
#3: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY
Has protein modificationN

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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: Cryo-EM structure of Nipah virus L-P polymerase complex
Type: COMPLEX / Entity ID: #1-#2 / Source: MULTIPLE SOURCES
Source (natural)Organism: Nipah virus
Source (recombinant)Organism: Spodoptera (butterflies/moths)
Buffer solutionpH: 8.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen 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 FIELD / Nominal defocus max: 2200 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K2 BASE (4k x 4k)

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Processing

EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.19 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 248717 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00412817
ELECTRON MICROSCOPYf_angle_d0.59417320
ELECTRON MICROSCOPYf_dihedral_angle_d3.9381707
ELECTRON MICROSCOPYf_chiral_restr0.0421997
ELECTRON MICROSCOPYf_plane_restr0.0042202

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