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- EMDB-9887: Structure of influenza D virus polymerase bound to cRNA promoter ... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-9887 | |||||||||
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Title | Structure of influenza D virus polymerase bound to cRNA promoter in class 1 | |||||||||
![]() | Structure of influenza D virus polymerase bound to cRNA promoter in class 1 | |||||||||
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Function / homology | ![]() symbiont-mediated suppression of host mRNA transcription via inhibition of RNA polymerase II activity / host cell mitochondrion / 7-methylguanosine mRNA capping / cap snatching / virion component / RNA-directed RNA polymerase / viral RNA genome replication / RNA-dependent RNA polymerase activity / DNA-templated transcription / nucleotide binding ...symbiont-mediated suppression of host mRNA transcription via inhibition of RNA polymerase II activity / host cell mitochondrion / 7-methylguanosine mRNA capping / cap snatching / virion component / RNA-directed RNA polymerase / viral RNA genome replication / RNA-dependent RNA polymerase activity / DNA-templated transcription / nucleotide binding / host cell nucleus / RNA binding Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.44 Å | |||||||||
![]() | Peng Q / Peng R / Qi J / Gao GF / Shi Y | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural insight into RNA synthesis by influenza D polymerase. Authors: Qi Peng / Yuqian Liu / Ruchao Peng / Min Wang / Wei Yang / Hao Song / Yuhai Chen / Sheng Liu / Min Han / Xinzheng Zhang / Peiyi Wang / Jinghua Yan / Buchang Zhang / Jianxun Qi / Tao Deng / ...Authors: Qi Peng / Yuqian Liu / Ruchao Peng / Min Wang / Wei Yang / Hao Song / Yuhai Chen / Sheng Liu / Min Han / Xinzheng Zhang / Peiyi Wang / Jinghua Yan / Buchang Zhang / Jianxun Qi / Tao Deng / George F Gao / Yi Shi / ![]() Abstract: The influenza virus polymerase uses capped RNA primers to initiate transcription, and a combination of terminal and internal de novo initiations for the two-step replication process by binding the ...The influenza virus polymerase uses capped RNA primers to initiate transcription, and a combination of terminal and internal de novo initiations for the two-step replication process by binding the conserved viral genomic RNA (vRNA) or complementary RNA (cRNA) promoter. Here, we determined the apo and promoter-bound influenza D polymerase structures using cryo-electron microscopy and found the polymerase has an evolutionarily conserved stable core structure with inherently flexible peripheral domains. Strikingly, two conformations (mode A and B) of the vRNA promoter were observed where the 3'-vRNA end can bind at two different sites, whereas the cRNA promoter only binds in the mode B conformation. Functional studies confirmed the critical role of the mode B conformation for vRNA synthesis via the intermediate cRNA but not for cRNA production, which is mainly regulated by the mode A conformation. Both conformations participate in the regulation of the transcription process. This work advances our understanding of the regulatory mechanisms for the synthesis of different RNA species by influenza virus polymerase and opens new opportunities for antiviral drug design. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 2.1 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 18 KB 18 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 6.4 KB | Display | ![]() |
Images | ![]() | 32.1 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6kujMC ![]() 9577C ![]() 9578C ![]() 9579C ![]() 9580C ![]() 9581C ![]() 9582C ![]() 9888C ![]() 6kukC ![]() 6kupC ![]() 6kurC ![]() 6kutC ![]() 6kuuC ![]() 6kuvC ![]() 6kv5C M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Map
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Annotation | Structure of influenza D virus polymerase bound to cRNA promoter in class 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.36 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : Influenza D virus polymerase bound to cRNA promoter in mode A con...
Entire | Name: Influenza D virus polymerase bound to cRNA promoter in mode A conformation |
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Components |
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-Supramolecule #1: Influenza D virus polymerase bound to cRNA promoter in mode A con...
Supramolecule | Name: Influenza D virus polymerase bound to cRNA promoter in mode A conformation type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() |
Recombinant expression | Organism: ![]() ![]() |
Molecular weight | Experimental: 270 KDa |
-Macromolecule #1: Polymerase 3
Macromolecule | Name: Polymerase 3 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 83.036086 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MSSVIREIAK RFLEQATINI AEEVVREYGD HERTMISVGV HFQACCLISD EYTLEDETTP RYVLLEGLKR QEAISKQNNI CSTLGLEPL RNLADIFDRK TRRFLEVGIT KRESDEYYQE KFNKIGNDMD IHVFTYEGKY FSNNPNGLED IQKTRIFTFL S FVSDELRK ...String: MSSVIREIAK RFLEQATINI AEEVVREYGD HERTMISVGV HFQACCLISD EYTLEDETTP RYVLLEGLKR QEAISKQNNI CSTLGLEPL RNLADIFDRK TRRFLEVGIT KRESDEYYQE KFNKIGNDMD IHVFTYEGKY FSNNPNGLED IQKTRIFTFL S FVSDELRK ENMFTEMYVT EEGAPELEMY KSKLFIAMRD ESVPLPYINY EHLRTRCETF KRNQAECEAK VADVASRLKI KL EHLEENK LRPLEIPKEK EAPYTHKFLM KDAWFFAKPH DSERAQPQQI LYDFFEAANM GFMTTSPKPI FGKQGLMYHS LWG QTKRAI KDKRNELEPS EQRDFLCGIG RASKKIQEDK WQESREEEFK QEETKGAAKR GFPTWFNEEW LWAMRDSGDG DNKI GDWIP MAEMPPCKNE MEDYAKKMCE ELESKIQGTN CAREMSKLIH TIGSLHTECR NFPGKVKIVP IYCRGTLRGE STDCL FGIA IKGKSHLNKD DGMYTVVTFE FSTEEPNPSK HEKYTVFEAG TVPVEAVVLT PKRERVLKEK KLFLYCRTTG MSKLKN DWF SKCRRCLIPT METVEQIVLK ECALKEENRV SEMLENKRAW IAHENGENLT RLVSTKLKDL CRMLIVTQFY YCIYNDN QL EGFCNEQKKF LMFLQADKDS KSAFTFNQKG LYEKIEECIV SNPLCIFLAD RLNKLFLVAK SNGAKYFE |
-Macromolecule #2: RNA-directed RNA polymerase catalytic subunit
Macromolecule | Name: RNA-directed RNA polymerase catalytic subunit / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO / EC number: RNA-directed RNA polymerase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 86.138844 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MEINPYLLML NNDITSMISL TYPYTGAPPM SHGTSTKYSM ETVSRTYSYS RTKKEVPSGI FPIERRKFCN TIEDKENLEK PNGNVDINF MLSLAEMLEE KMGKGFFKFC ANEAEAEILK MHFSKLTEGR QTYDWTSERN MPAATALQLT VDAIQETQGT F KGTTMVEY ...String: MEINPYLLML NNDITSMISL TYPYTGAPPM SHGTSTKYSM ETVSRTYSYS RTKKEVPSGI FPIERRKFCN TIEDKENLEK PNGNVDINF MLSLAEMLEE KMGKGFFKFC ANEAEAEILK MHFSKLTEGR QTYDWTSERN MPAATALQLT VDAIQETQGT F KGTTMVEY CNKILEMMDW PEVKFKKVRM IVQRHWDPKT KKEIKMKSPT LMITKIGREE FIKRICTINT MAKDGERGKY KR RAIATPG MGIRPFSKIV ETLAQKICER LAESGLPVGG NEKKAKLKTT VSSTNSKLQE GQFMVNITGD NSKWNECQQP EAY LAMLAY ITKDSSNLMK DLCSVAPTLF CNKYVKMGQG FRAKNKRKTK EIVIPAKKMK ERKELMNAEW RDLFETIEPY MDGE CCFLG GGMLMGMFNM LSTVFGVMTL NYREEALARR NCYWTGLQSS DDFVLFCISR TWPEMEMTIL KFIAVCKLMG INMSL EKSY GCLPELFEFT SMFFSGDFVS NIALELPAFT TAGMNEGTDF TAAMSVIRTN MINNGLSPGT ALMALRICLQ EFRATY RVH PYDSGVKNHR MKIIRKFIET IENKDGLLIS DGGKLMNNIS SLHIPEEILK EDLMDPSYRN RVFNPRNPFT QFEKTVD IF KASGPIRVEE NEAVVSTHSF RTRSNRTLLN TDMRAMALEE KRYQVVCNMY RSVFESADVN TPIGSMSMGE AIEAKILD R ARTQFENGII GGEEYSEIKR LIEDAKRQRL SV |
-Macromolecule #3: Polymerase PB2
Macromolecule | Name: Polymerase PB2 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 88.480484 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MSLLLTLAKE YANLTKDKKS CKLLSQGTVS SYTTFKKWTT SRKEKNPSLR MRWAMGSKFP IMANREILEE AGIPEQWEGI DLWSKKDDV SKLGMVLASP AAITYWNFCG PGVDNSSVIK DVYKAKFMKK ERWRETLWGP MNFELVGKQR RVVETQPVEI K LNQKEIKE ...String: MSLLLTLAKE YANLTKDKKS CKLLSQGTVS SYTTFKKWTT SRKEKNPSLR MRWAMGSKFP IMANREILEE AGIPEQWEGI DLWSKKDDV SKLGMVLASP AAITYWNFCG PGVDNSSVIK DVYKAKFMKK ERWRETLWGP MNFELVGKQR RVVETQPVEI K LNQKEIKE LTMWVLFEDE ANLASKFIQE NFSLVLSLRE LYKGKAVNKD VAAFMIAHQF SPEKRFLPTF GPIRPERMEL LH CLGGDFW KIEAVTAGSL NEEQKKRDVR AVARKICLRA SVDLFTPAEK IRDYIASVTM RFGTVERTFE DVIRNSDDIS AEV TLCKAA LGCELGKSMS FGNLNLRKVS GEAETMEKTV YWGLKPIKYK CWRGEETFYC ELRKVTCMFR RSEGLDWANI GPGS PEERR ELLAMVMIFC RDGRFFESAP VNIDESFFRT RLNKEIPYQY VLLKWVRQSR DNLDALLSTR GLIPAHIGQF GKGMG IDGS SSSSMVYKGV MLSKTPIDIV ESKEKHRLFL NDNIEAVTER GAMVASIMDL SEDNRETFND VTFNHVDLAV LKDEKT AII KIYRSLVERI NTDDDGLPAL IMGKRYLELY QLDEVKDAVG LIPKRMLGAY SYQARQLIQS QIKNDSYSLP EIIKLLP FC YSPPKKMLFD GTFHFKNQMY VRPGINTNLF SFSKTDKSKI YVNGSAVKIK LVLGDDEMDT SLAFVEGFQV CEYDPRAP L IPRRDLRLIG FGKKVRVFVG QGQEKTLVRT SSKRAASHDV SKNIRRMRLE V |
-Macromolecule #4: RNA (5'-R(P*UP*CP*CP*UP*UP*GP*CP*UP*AP*CP*UP*GP*CP*U)-3')
Macromolecule | Name: RNA (5'-R(P*UP*CP*CP*UP*UP*GP*CP*UP*AP*CP*UP*GP*CP*U)-3') type: rna / ID: 4 / Number of copies: 1 |
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Source (natural) | Organism: synthetic construct (others) |
Molecular weight | Theoretical: 4.337563 KDa |
Sequence | String: UCCUUGCUAC UGCU |
-Macromolecule #5: RNA (5'-R(P*AP*GP*CP*AP*UP*AP*AP*GP*CP*AP*GP*GP*AP*GP*A)-3')
Macromolecule | Name: RNA (5'-R(P*AP*GP*CP*AP*UP*AP*AP*GP*CP*AP*GP*GP*AP*GP*A)-3') type: rna / ID: 5 / Number of copies: 1 |
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Source (natural) | Organism: synthetic construct (others) |
Molecular weight | Theoretical: 4.902042 KDa |
Sequence | String: AGCAUAAGCA GGAGA |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 0.8 mg/mL |
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Buffer | pH: 7.5 |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 40.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: FLEXIBLE FIT |
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Output model | ![]() PDB-6kuj: |