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- EMDB-64766: Coupling of polymerase-nucleoprotein-RNA in an influenza virus mi... -

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Basic information

Entry
Database: EMDB / ID: EMD-64766
TitleCoupling of polymerase-nucleoprotein-RNA in an influenza virus mini ribonucleoprotein complex
Map data
Sample
  • Complex: FluPol_NP-0_RNA_State In
    • Protein or peptide: Polymerase acidic protein
    • Protein or peptide: RNA-directed RNA polymerase catalytic subunit
    • Protein or peptide: Polymerase basic protein 2
    • Protein or peptide: Nucleoprotein
    • RNA: RNA (5'-R(P*UP*UP*UP*GP*UP*CP*AP*CP*CP*CP*UP*GP*CP*U)-3')
    • RNA: RNA (5'-R(P*AP*GP*UP*AP*GP*AP*AP*AP*CP*AP*AP*GP*GP*GP*UP*GP*UP*UP*UP*UP*UP*UP*AP*U)-3')
KeywordsInfluenza virus / ribonucleoprotein complex / polymerase / cryo-EM / VIRAL PROTEIN/RNA / VIRAL PROTEIN-RNA complex
Function / homology
Function and homology information


helical viral capsid / cap snatching / viral transcription / symbiont-mediated suppression of host mRNA transcription via inhibition of RNA polymerase II activity / 7-methylguanosine mRNA capping / host cell mitochondrion / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity / virion component / viral penetration into host nucleus / host cell ...helical viral capsid / cap snatching / viral transcription / symbiont-mediated suppression of host mRNA transcription via inhibition of RNA polymerase II activity / 7-methylguanosine mRNA capping / host cell mitochondrion / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity / virion component / viral penetration into host nucleus / host cell / viral nucleocapsid / endonuclease activity / Hydrolases; Acting on ester bonds / host cell cytoplasm / ribonucleoprotein complex / symbiont-mediated suppression of host gene expression / viral translational frameshifting / RNA-directed RNA polymerase / viral RNA genome replication / nucleotide binding / RNA-directed RNA polymerase activity / DNA-templated transcription / symbiont entry into host cell / host cell nucleus / structural molecule activity / RNA binding / metal ion binding
Similarity search - Function
Influenza virus nucleoprotein (NP) / Influenza virus nucleoprotein / Influenza RNA-dependent RNA polymerase subunit PB2 / PB2, C-terminal / Influenza RNA-dependent RNA polymerase subunit PB1 / Influenza RNA-dependent RNA polymerase subunit PB1 / : / : / Influenza RNA polymerase PB2 N-terminal region / Influenza RNA polymerase PB2 second domain ...Influenza virus nucleoprotein (NP) / Influenza virus nucleoprotein / Influenza RNA-dependent RNA polymerase subunit PB2 / PB2, C-terminal / Influenza RNA-dependent RNA polymerase subunit PB1 / Influenza RNA-dependent RNA polymerase subunit PB1 / : / : / Influenza RNA polymerase PB2 N-terminal region / Influenza RNA polymerase PB2 second domain / : / Influenza RNA polymerase PB2 middle domain / : / Influenza RNA polymerase PB2 C-terminal domain / : / Influenza RNA polymerase PB2 6th domain / : / Influenza RNA polymerase PB2 CAP binding domain / : / Influenza RNA polymerase PB2 helical domain / Polymerase acidic protein / Influenza RNA-dependent RNA polymerase subunit PA / Influenza RNA-dependent RNA polymerase subunit PA, endonuclease domain / Influenza RNA-dependent RNA polymerase subunit PA / RNA-directed RNA polymerase, negative-strand RNA virus / RdRp of negative ssRNA viruses with segmented genomes catalytic domain profile.
Similarity search - Domain/homology
Polymerase acidic protein / RNA-directed RNA polymerase catalytic subunit / Polymerase basic protein 2 / Nucleoprotein
Similarity search - Component
Biological speciesInfluenza A virus (A/Victoria/3/1975(H3N2))
Methodsingle particle reconstruction / cryo EM / Resolution: 2.97 Å
AuthorsKang H / Yang Y / Liu Y / Li M / Zhang L / Lin Y / Rao Z / Lou Z
Funding support1 items
OrganizationGrant numberCountry
Not funded
CitationJournal: To Be Published
Title: Coupling of polymerase-nucleoprotein-RNA in an influenza virus mini ribonucleoprotein complex
Authors: Kang H / Yang Y / Liu Y / Li M / Zhang L / Lin Y / Rao Z / Lou Z
History
DepositionMay 22, 2025-
Header (metadata) releaseOct 8, 2025-
Map releaseOct 8, 2025-
UpdateOct 8, 2025-
Current statusOct 8, 2025Processing site: PDBc / Status: Released

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Structure visualization

Supplemental images

emd_64766.png

Downloads & links

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Map

FileDownload / File: emd_64766.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.96 Å/pix.
x 360 pix.
= 345.6 Å		0.96 Å/pix.
x 360 pix.
= 345.6 Å		0.96 Å/pix.
x 360 pix.
= 345.6 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.96 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.07
Minimum - Maximum-0.02850123 - 1.957252
Average (Standard dev.)0.001013893 (±0.02077491)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions360360360
Spacing360360360
CellA=B=C: 345.6 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_64766_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_64766_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : FluPol_NP-0_RNA_State In

EntireName: FluPol_NP-0_RNA_State In
Components
  • Complex: FluPol_NP-0_RNA_State In
    • Protein or peptide: Polymerase acidic protein
    • Protein or peptide: RNA-directed RNA polymerase catalytic subunit
    • Protein or peptide: Polymerase basic protein 2
    • Protein or peptide: Nucleoprotein
    • RNA: RNA (5'-R(P*UP*UP*UP*GP*UP*CP*AP*CP*CP*CP*UP*GP*CP*U)-3')
    • RNA: RNA (5'-R(P*AP*GP*UP*AP*GP*AP*AP*AP*CP*AP*AP*GP*GP*GP*UP*GP*UP*UP*UP*UP*UP*UP*AP*U)-3')

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Supramolecule #1: FluPol_NP-0_RNA_State In

SupramoleculeName: FluPol_NP-0_RNA_State In / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Influenza A virus (A/Victoria/3/1975(H3N2))

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Macromolecule #1: Polymerase acidic protein

MacromoleculeName: Polymerase acidic protein / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: Hydrolases; Acting on ester bonds
Source (natural)Organism: Influenza A virus (A/Victoria/3/1975(H3N2))
Molecular weightTheoretical: 82.998781 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MEDFVRQCFN PMIVELAEKA MKEYGEDLKI ETNKFAAICT HLEVCFMYSD FHFINEQGES IVVELDDPNA LLKHRFEIIE GRDRTMAWT VVNSICNTTG AEKPKFLPDL YDYKENRFIE IGVTRREVHI YYLEKANKIK SENTHIHIFS FTGEEMATKA D YTLDEESR ...String:
MEDFVRQCFN PMIVELAEKA MKEYGEDLKI ETNKFAAICT HLEVCFMYSD FHFINEQGES IVVELDDPNA LLKHRFEIIE GRDRTMAWT VVNSICNTTG AEKPKFLPDL YDYKENRFIE IGVTRREVHI YYLEKANKIK SENTHIHIFS FTGEEMATKA D YTLDEESR ARIKTRLFTI RQEMANRGLW DSFRQSERGE ETIEERFEIT GTMRRLADQS LPPNFSCLEN FRAYVDGFEP NG CIEGKLS QMSKEVNAKI EPFLKTTPRP IKLPDGPPCF QRSKFLLMDA LKLSIEDPSH EGEGIPLYDA IKCMRTFFGW KEP YIVKPH ERGINSNYLL SWKQVLAELQ DIENEEKIPR TKNMKKTSQL KWALGENMAP EKVDFDNCRD ISDLKQYDSD EPEL RSLSS WIQNEFNKAC ELTDSIWIEL DEIGEDVAPI EYIASMRRNY FTAEVSHCRA TEYIMKGVYI NTALLNASCA AMDDF QLIP MISKCRTKEG RRKTNLYGFI IKGRSHLRND TDVVNFVSME FSLTDPRLEP HKWEKYCVLE IGDMLLRSAI GQMSRP MFL YVRTNGTSKI KMKWGMEMRR CLLQSLQQIE SMIEAESSVK EKDMTKEFFE NKSETWPIGE SPKGVEEGSI GKVCRTL LA KSVFNSLYAS PQLEGFSAES RKLLLVVQAL RDNLEPGTFD LGGLYEAIEE CLINDPWVLL NASWFNSFLT HALR

UniProtKB: Polymerase acidic protein

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Macromolecule #2: RNA-directed RNA polymerase catalytic subunit

MacromoleculeName: RNA-directed RNA polymerase catalytic subunit / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO / EC number: RNA-directed RNA polymerase
Source (natural)Organism: Influenza A virus (A/Victoria/3/1975(H3N2))
Molecular weightTheoretical: 86.578172 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MDVNPTLLFL KVPAQNAIST TFPYTGDPPY SHGTGTGYTM DTVNRTHQYS EKGKWTTNTE TGAPQLNPID GPLPEDNEPS GYAQTDCVL EAMAFLEESH PGIFENSCLE TMEVVQQTRV DRLTQGRQTY DWTLNRNQPA ATALANTIEV FRSNGLTANE S GRLIDFLK ...String:
MDVNPTLLFL KVPAQNAIST TFPYTGDPPY SHGTGTGYTM DTVNRTHQYS EKGKWTTNTE TGAPQLNPID GPLPEDNEPS GYAQTDCVL EAMAFLEESH PGIFENSCLE TMEVVQQTRV DRLTQGRQTY DWTLNRNQPA ATALANTIEV FRSNGLTANE S GRLIDFLK DVIESMDKEE MEITTHFQRK RRVRDNMTKK MVTQRTIGKK KQRVNKRSYL IRALTLNTMT KDAERGKLKR RA IATPGMQ IRGFVYFVET LARSICEKLE QSGLPVGGNE KKAKLANVVR KMMTNSQDTE LSFTITGDNT KWNENQNPRM FLA MITYIT KNQPEWFRNI LSIAPIMFSN KMARLGKGYM FESKRMKLRT QIPAEMLASI DLKYFNESTR KKIEKIRPLL IDGT ASLSP GMMMGMFNML STVLGVSILN LGQKKYTKTT YWWDGLQSSD DFALIVNAPN HEGIQAGVDR FYRTCKLVGI NMSKK KSYI NRTGTFEFTS FFYRYGFVAN FSMELPSFGV SGINESADMS IGVTVIKNNM INNDLGPATA QMALQLFIKD YRYTYR CHR GDTQIQTRRS FELKKLWEQT RSKAGLLVSD GGPNLYNIRN LHIPEVCLKW ELMDEDYQGR LCNPLNPFVS HKEIESV NN AVVMPAHGPA KSMEYDAVAT THSWIPKRNR SILNTSQRGI LEDEQMYQKC CNLFEKFFPS SSYRRPVGIS SMVEAMVS R ARIDARIDFE SGRIKKEEFS EIMKICSTIE ELRRQK

UniProtKB: RNA-directed RNA polymerase catalytic subunit

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Macromolecule #3: Polymerase basic protein 2

MacromoleculeName: Polymerase basic protein 2 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Influenza A virus (A/Victoria/3/1975(H3N2))
Molecular weightTheoretical: 86.243445 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MERIKELRNL MSQSRTREIL TKTTVDHMAI IKKYTSGRQE KNPSLRMKWM MAMKYPITAD KRITEMVPER NEQGQTLWSK MSDAGSDRV MVSPLAVTWW NRNGPVTSTV HYPKVYKTYF DKVERLKHGT FGPVHFRNQV KIRRRVDINP GHADLSAKEA Q DVIMEVVF ...String:
MERIKELRNL MSQSRTREIL TKTTVDHMAI IKKYTSGRQE KNPSLRMKWM MAMKYPITAD KRITEMVPER NEQGQTLWSK MSDAGSDRV MVSPLAVTWW NRNGPVTSTV HYPKVYKTYF DKVERLKHGT FGPVHFRNQV KIRRRVDINP GHADLSAKEA Q DVIMEVVF PNEVGARILT SESQLTITKE KKEELQDCKI SPLMVAYMLE RELVRKTRFL PVAGGTSSVY IEVLHLTQGT CW EQMYTPG GEVRNDDIDQ SLIIAARNIV RRASVSADPL ASLLEMCHST QIGGTRMVDI LRQNPTEEQA VDICKAAMGL RIS SSFSFG GFTFKRTSGS SIKREEEVLT GNLQTLKIRV HEGYEEFTMV GKRATAILRK ATRRLVQLIV SGRDEQSIAE AIIV AMVFS QEDCMIKAVR GDLNFVNRAN QRLNPMHQLL RHFQKDAKVL FQNWGIEHID NVMGMVGVLP DMTPSTEMSM RGIRV SKMG VDEYSSTERV VVSIDRFLRV RDQRGNVLLS PEEVSETHGT ERLTITYSSS MMWEINGPES VLVNTYQWII RNWETV KIQ WSQNPTMLYN KMEFEPFQSL VPKAIRGQYS GFVRTLFQQM RDVLGTFDTT QIIKLLPFAA APPKQSRMQF SSLTVNV RG SGMRILVRGN SPVFNYNKTT KRLTILGKDA GTLIEDPDES TSGVESAVLR GFLILGKEDR RYGPALSINE LSNLAKGE K ANVLIGQGDV VLVMKRKRDS SILTDSQTAT KRIRMAIN

UniProtKB: Polymerase basic protein 2

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Macromolecule #4: Nucleoprotein

MacromoleculeName: Nucleoprotein / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Influenza A virus (A/Victoria/3/1975(H3N2))
Molecular weightTheoretical: 56.172574 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MASQGTKRSY EQMETDGERQ NATEIRASVG KMINGIGRFY IQMCTELKLS DYEGRLIQNS LTIERMVLSA FDERRNRYLE EHPSAGKDP KKTGGPIYKR VDGKWMRELV LYDKEEIRRI WRQANNGDDA TAGLTHMMIW HSNLNDTTYQ RTRALVRTGM D PRMCSLMQ ...String:
MASQGTKRSY EQMETDGERQ NATEIRASVG KMINGIGRFY IQMCTELKLS DYEGRLIQNS LTIERMVLSA FDERRNRYLE EHPSAGKDP KKTGGPIYKR VDGKWMRELV LYDKEEIRRI WRQANNGDDA TAGLTHMMIW HSNLNDTTYQ RTRALVRTGM D PRMCSLMQ GSTLPRRSGA AGAAVKGVGT MVMELIRMIK RGINDRNFWR GENGRKTRSA YERMCNILKG KFQTAAQRAM MD QVRESRN PGNAEIEDLI FSARSALILR GSVAHKSCLP ACVYGPAVAS GYDFEKEGYS LVGIDPFKLL QNSQVYSLIR PNE NPAHKS QLVWMACHSA AFEDLRLLSF IRGTKVSPRG KLSTRGVQIA SNENMDTMES STLELRSRYW AIRTRSGGNT NQQR ASAGQ ISVQPAFSVQ RNLPFDKSTI MAAFTGNTEG RTSDMRAEII RMMEGAKPEE VSFRGRGVFE LSDEKATNPV VPSFD MSNE GSYFFGDNAE EYDN

UniProtKB: Nucleoprotein

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Macromolecule #5: RNA (5'-R(P*UP*UP*UP*GP*UP*CP*AP*CP*CP*CP*UP*GP*CP*U)-3')

MacromoleculeName: RNA (5'-R(P*UP*UP*UP*GP*UP*CP*AP*CP*CP*CP*UP*GP*CP*U)-3')
type: rna / ID: 5 / Number of copies: 1
Source (natural)Organism: Influenza A virus (A/Victoria/3/1975(H3N2))
Molecular weightTheoretical: 4.337563 KDa
SequenceString:
UUUGUCACCC UGCU

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Macromolecule #6: RNA (5'-R(P*AP*GP*UP*AP*GP*AP*AP*AP*CP*AP*AP*GP*GP*GP*UP*GP*UP*UP...

MacromoleculeName: RNA (5'-R(P*AP*GP*UP*AP*GP*AP*AP*AP*CP*AP*AP*GP*GP*GP*UP*GP*UP*UP*UP*UP*UP*UP*AP*U)-3')
type: rna / ID: 6 / Number of copies: 1
Source (natural)Organism: Influenza A virus (A/Victoria/3/1975(H3N2))
Molecular weightTheoretical: 7.7206 KDa
SequenceString:
AGUAGAAACA AGGGUGUUUU UUAU

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 8
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.97 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 265200
Initial angle assignmentType: COMMON LINE
Final angle assignmentType: PROJECTION MATCHING

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