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- EMDB-10361: Human Influenza B polymerase recycling complex -

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Basic information

Entry
Database: EMDB / ID: EMD-10361
TitleHuman Influenza B polymerase recycling complex
Map data
Sample
  • Complex: Human Influenza B polymerase recycling complex
    • Complex: Polymerase
      • Protein or peptide: Polymerase acidic protein
      • Protein or peptide: RNA-directed RNA polymerase catalytic subunit
      • Protein or peptide: Polymerase PB2
    • Complex: Nucleic acid
      • RNA: vRNAVault RNA
Function / homology
Function and homology information


virion component => GO:0044423 / symbiont-mediated suppression of host mRNA transcription via inhibition of RNA polymerase II activity / cap snatching / 7-methylguanosine mRNA capping / viral transcription / host cell mitochondrion / virion component / endonuclease activity / host cell cytoplasm / Hydrolases; Acting on ester bonds ...virion component => GO:0044423 / symbiont-mediated suppression of host mRNA transcription via inhibition of RNA polymerase II activity / cap snatching / 7-methylguanosine mRNA capping / viral transcription / host cell mitochondrion / virion component / endonuclease activity / host cell cytoplasm / Hydrolases; Acting on ester bonds / RNA-directed RNA polymerase / viral RNA genome replication / RNA-dependent RNA polymerase activity / nucleotide binding / DNA-templated transcription / host cell nucleus / RNA binding / metal ion binding
Similarity search - Function
Influenza RNA-dependent RNA polymerase subunit PB1 / Influenza RNA-dependent RNA polymerase subunit PB1 / Influenza RNA-dependent RNA polymerase subunit PB2 / PB2, C-terminal / : / : / : / : / : / Influenza RNA polymerase PB2 N-terminal region ...Influenza RNA-dependent RNA polymerase subunit PB1 / Influenza RNA-dependent RNA polymerase subunit PB1 / Influenza RNA-dependent RNA polymerase subunit PB2 / PB2, C-terminal / : / : / : / : / : / Influenza RNA polymerase PB2 N-terminal region / Influenza RNA polymerase PB2 second domain / Influenza RNA polymerase PB2 middle domain / Influenza RNA polymerase PB2 6th domain / Influenza RNA polymerase PB2 C-terminal domain / : / : / Influenza RNA polymerase PB2 helical domain / Influenza RNA polymerase PB2 CAP binding 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 basic protein 2 / Polymerase basic protein 2 / RNA-directed RNA polymerase catalytic subunit / Polymerase acidic protein
Similarity search - Component
Biological speciesInfluenza B virus
Methodsingle particle reconstruction / cryo EM / Resolution: 3.18 Å
AuthorsWandzik JM / Kouba T / Karuppasamy M / Cusack S
Funding support France, 1 items
OrganizationGrant numberCountry
French National Research AgencyANR-18-CE11-0028 France
CitationJournal: Cell / Year: 2020
Title: A Structure-Based Model for the Complete Transcription Cycle of Influenza Polymerase.
Authors: Joanna M Wandzik / Tomas Kouba / Manikandan Karuppasamy / Alexander Pflug / Petra Drncova / Jan Provaznik / Nayara Azevedo / Stephen Cusack /
Abstract: Influenza polymerase uses unique mechanisms to synthesize capped and polyadenylated mRNAs from the genomic viral RNA (vRNA) template, which is packaged inside ribonucleoprotein particles (vRNPs). ...Influenza polymerase uses unique mechanisms to synthesize capped and polyadenylated mRNAs from the genomic viral RNA (vRNA) template, which is packaged inside ribonucleoprotein particles (vRNPs). Here, we visualize by cryoelectron microscopy the conformational dynamics of the polymerase during the complete transcription cycle from pre-initiation to termination, focusing on the template trajectory. After exiting the active site cavity, the template 3' extremity rebinds into a specific site on the polymerase surface. Here, it remains sequestered during all subsequent transcription steps, forcing the template to loop out as it further translocates. At termination, the strained connection between the bound template 5' end and the active site results in polyadenylation by stuttering at uridine 17. Upon product dissociation, further conformational changes release the trapped template, allowing recycling back into the pre-initiation state. Influenza polymerase thus performs transcription while tightly binding to and protecting both template ends, allowing efficient production of multiple mRNAs from a single vRNP.
History
DepositionOct 3, 2019-
Header (metadata) releaseApr 15, 2020-
Map releaseApr 15, 2020-
UpdateDec 2, 2020-
Current statusDec 2, 2020Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.04
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 0.04
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6t0w
  • Surface level: 0.04
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_10361.png

Downloads & links

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Map

FileDownload / File: emd_10361.map.gz / Format: CCP4 / Size: 20.8 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.0506 Å
Density
Contour LevelBy AUTHOR: 0.04 / Movie #1: 0.04
Minimum - Maximum-0.14685269 - 0.23417819
Average (Standard dev.)0.00043281156 (±0.009580968)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions176176176
Spacing176176176
CellA=B=C: 184.90561 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.05060227272731.05060227272731.0506022727273
M x/y/z176176176
origin x/y/z0.0000.0000.000
length x/y/z184.906184.906184.906
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ350350350
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS176176176
D min/max/mean-0.1470.2340.000

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Supplemental data

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Additional map: LocScale map

Fileemd_10361_additional.map
AnnotationLocScale map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_10361_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_10361_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 : Human Influenza B polymerase recycling complex

EntireName: Human Influenza B polymerase recycling complex
Components
  • Complex: Human Influenza B polymerase recycling complex
    • Complex: Polymerase
      • Protein or peptide: Polymerase acidic protein
      • Protein or peptide: RNA-directed RNA polymerase catalytic subunit
      • Protein or peptide: Polymerase PB2
    • Complex: Nucleic acid
      • RNA: vRNAVault RNA

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Supramolecule #1: Human Influenza B polymerase recycling complex

SupramoleculeName: Human Influenza B polymerase recycling complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all

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Supramolecule #2: Polymerase

SupramoleculeName: Polymerase / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1-#3
Source (natural)Organism: Influenza B virus
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)

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Supramolecule #3: Nucleic acid

SupramoleculeName: Nucleic acid / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #4
Source (natural)Organism: Influenza B virus
Recombinant expressionOrganism: synthetic construct (others)

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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 B virus
Molecular weightTheoretical: 85.822781 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: GSHHHHHHHH GSGSMDTFIT RNFQTTIIQK AKNTMAEFSE DPELQPAMLF NICVHLEVCY VISDMNFLDE EGKAYTALEG QGKEQNLRP QYEVIEGMPR TIAWMVQRSL AQEHGIETPK YLADLFDYKT KRFIEVGITK GLADDYFWKK KEKLGNSMEL M IFSYNQDY ...String:
GSHHHHHHHH GSGSMDTFIT RNFQTTIIQK AKNTMAEFSE DPELQPAMLF NICVHLEVCY VISDMNFLDE EGKAYTALEG QGKEQNLRP QYEVIEGMPR TIAWMVQRSL AQEHGIETPK YLADLFDYKT KRFIEVGITK GLADDYFWKK KEKLGNSMEL M IFSYNQDY SLSNESSLDE EGKGRVLSRL TELQAELSLK NLWQVLIGEE DVEKGIDFKL GQTISRLRDI SVPAGFSNFE GM RSYIDNI DPKGAIERNL ARMSPLVSVT PKKLTWEDLR PIGPHIYNHE LPEVPYNAFL LMSDELGLAN MTEGKSKKPK TLA KECLEK YSTLRDQTDP ILIMKSEKAN ENFLWKLWRD CVNTISNEEM SNELQKTNYA KWATGDGLTY QKIMKEVAID DETM CQEEP KIPNKCRVAA WVQTEMNLLS TLTSKRALDL PEIGPDVAPV EHVGSERRKY FVNEINYCKA STVMMKYVLF HTSLL NESN ASMGKYKVIP ITNRVVNEKG ESFDMLYGLA VKGQSHLRGD TDVVTVVTFE FSSTDPRVDS GKWPKYTVFR IGSLFV SGR EKSVYLYCRV NGTNKIQMKW GMEARRCLLQ SMQQMEAIVE QESSIQGYDM TKACFKGDRV NSPKTFSIGT QEGKLVK GS FGKALRVIFT KCLMHYVFGN AQLEGFSAES RRLLLLIQAL KDRKGPWVFD LEGMYSGIEE CISNNPWVIQ SAYWFNEW L GFEKEGSKVL ESVDEIMDEG SGSGENLYFQ

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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 B virus
Molecular weightTheoretical: 86.207016 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: GSGSGSGSGM NINPYFLFID VPIQAAISTT FPYTGVPPYS HGTGTGYTID TVIRTHEYSN KGKQYISDVT GCTMVDPTNG PLPEDNEPS AYAQLDCVLE ALDRMDEEHP GLFQAASQNA METLMVTTVD KLTQGRQTFD WTVCRNQPAA TALNTTITSF R LNDLNGAD ...String:
GSGSGSGSGM NINPYFLFID VPIQAAISTT FPYTGVPPYS HGTGTGYTID TVIRTHEYSN KGKQYISDVT GCTMVDPTNG PLPEDNEPS AYAQLDCVLE ALDRMDEEHP GLFQAASQNA METLMVTTVD KLTQGRQTFD WTVCRNQPAA TALNTTITSF R LNDLNGAD KGGLIPFCQD IIDSLDRPEM TFFSVKNIKK KLPAKNRKGF LIKRIPMKVK DKITKVEYIK RALSLNTMTK DA ERGKLKR RAIATAGIQI RGFVLVVENL AKNICENLEQ SGLPVGGNEK KAKLSNAVAK MLSNCPPGGI SMTVTGDNTK WNE CLNPRI FLAMTERITR DSPIWFRDFC SIAPVLFSNK IARLGKGFMI TSKTKRLKAQ IPCPDLFSIP LERYNEETRA KLKK LKPFF NEEGTASLSP GMMMGMFNML STVLGVAALG IKNIGNKEYL WDGLQSSDDF ALFVNAKDEE TCMEGINDFY RTCKL LGIN MSKKKSYCNE TGMFEFTSMF YRDGFVSNFA MELPSFGVAG VNESADMAIG MTIIKNNMIN NGMGPATAQT AIQLFI ADY RYTYKCHRGD SKVEGKRMKI IKELWENTKG RDGLLVADGG PNIYNLRNLH IPEIVLKYNL MDPEYKGRLL HPQNPFV GH LSIEGIKEAD ITPAHGPVKK MDYDAVSGTH SWRTKRNRSI LNTDQRNMIL EEQCYAKCCN LFEACFNSAS YRKPVGQH S MLEAMAHRLR MDARLDYESG RMSKDDFEKA MAHLGEIGYI GSGSGENLYF Q

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Macromolecule #3: Polymerase PB2

MacromoleculeName: Polymerase PB2 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Influenza B virus
Molecular weightTheoretical: 90.971281 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: GSGSGSGSGM TLAKIELLKQ LLRDNEAKTV LKQTTVDQYN IIRKFNTSRI EKNPSLRMKW AMCSNFPLAL TKGDMANRIP LEYKGIQLK TNAEDIGTKG QMCSIAAVTW WNTYGPIGDT EGFERVYESF FLRKMRLDNA TWGRITFGPV ERVRKRVLLN P LTKEMPPD ...String:
GSGSGSGSGM TLAKIELLKQ LLRDNEAKTV LKQTTVDQYN IIRKFNTSRI EKNPSLRMKW AMCSNFPLAL TKGDMANRIP LEYKGIQLK TNAEDIGTKG QMCSIAAVTW WNTYGPIGDT EGFERVYESF FLRKMRLDNA TWGRITFGPV ERVRKRVLLN P LTKEMPPD EASNVIMEIL FPKEAGIPRE STWIHRELIK EKREKLKGTM ITPIVLAYML ERELVARRRF LPVAGATSAE FI EMLHCLQ GENWRQIYHP GGNKLTESRS QSMIVACRKI IRRSIVASNP LELAVEIANK TVIDTEPLKS CLAAIDGGDV ACD IIRAAL GLKIRQRQRF GRLELKRISG RGFKNDEEIL IGNGTIQKIG IWDGEEEFHV RCGECRGILK KSKMKLEKLL INSA KKEDM RDLIILCMVF SQDTRMFQGV RGEINFLNRA GQLLSPMYQL QRYFLNRSND LFDQWGYEES PKASELHGIN ESMNA SDYT LKGVVVTRNV IDDFSSTETE KVSITKNLSL IKRTGEVIMG ANDVSELESQ AQLMITYDTP KMWEMGTTKE LVQNTY QWV LKNLVTLKAQ FLLGKEDMFQ WDAFEAFESI IPQKMAGQYS GFARAVLKQM RDQEVMKTDQ FIKLLPFCFS PPKLRSN GE PYQFLKLVLK GGGENFIEVR KGSPLFSYNP QTEVLTICGR MMSLKGKIED EERNRSMGNA VLAGFLVSGK YDPDLGDF K TIEELEKLKP GEKANILLYQ GKPVKVVKRK RYSALSNDIS QGIKRQRMTV ESMGWALSGW SHPQFEKGRS GGENLYFQ

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Macromolecule #4: vRNA

MacromoleculeName: vRNA / type: rna / ID: 4 / Number of copies: 1
Source (natural)Organism: Influenza B virus
Molecular weightTheoretical: 10.838431 KDa
SequenceString:
AGUAGUAACA AGAGGUAUUA CCUCUGCUUC UGCU

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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: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy
Image recordingFilm or detector model: GATAN K2 QUANTUM (4k x 4k) / Average electron dose: 35.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.18 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 68333
FSC plot (resolution estimation)

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