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- EMDB-10355: Bat Influenza A polymerase elongation complex with incoming UTP a... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-10355 | |||||||||
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Title | Bat Influenza A polymerase elongation complex with incoming UTP analogue (core + endonuclease only) | |||||||||
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![]() | Influenza / polymerase / viral transcription / RNA / VIRAL PROTEIN | |||||||||
Function / homology | ![]() 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 / virion component / host cell cytoplasm / viral translational frameshifting / RNA-directed RNA polymerase / viral RNA genome replication ...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 / virion component / host cell cytoplasm / viral translational frameshifting / RNA-directed RNA polymerase / viral RNA genome replication / symbiont-mediated suppression of host gene expression / RNA-directed RNA polymerase activity / nucleotide binding / DNA-templated transcription / host cell nucleus / RNA binding / metal ion binding Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.5 Å | |||||||||
![]() | Wandzik JM / Kouba T | |||||||||
Funding support | ![]()
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![]() | ![]() 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 |
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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 | ![]() | 117 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 24.4 KB 24.4 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 11.4 KB | Display | ![]() |
Images | ![]() | 135.3 KB | ||
Filedesc metadata | ![]() | 7.5 KB | ||
Others | ![]() ![]() ![]() | 60.2 MB 98.8 MB 98.9 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 190.3 KB | Display | ![]() |
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Full document | ![]() | 189.8 KB | Display | |
Data in XML | ![]() | 501 B | Display | |
Data in CIF | ![]() | 374 B | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6szvMC ![]() 6szuC ![]() 6t0nC ![]() 6t0rC ![]() 6t0sC ![]() 6t0uC ![]() 6t0vC ![]() 6t0wC ![]() 6t2cC ![]() 6tu5C ![]() 6tw1C 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
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.8127 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Additional map: LocScale map
File | emd_10355_additional.map | ||||||||||||
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Annotation | LocScale map | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_10355_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_10355_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
+Entire : Bat Influenza A polymerase elongation complex with incoming UTP a...
+Supramolecule #1: Bat Influenza A polymerase elongation complex with incoming UTP a...
+Supramolecule #2: Polymerase
+Supramolecule #3: Nucleic acids
+Macromolecule #1: Polymerase acidic protein
+Macromolecule #2: RNA-directed RNA polymerase catalytic subunit
+Macromolecule #3: Polymerase basic protein 2
+Macromolecule #4: 5' vRNA
+Macromolecule #5: 3' vRNA
+Macromolecule #6: Capped mRNA
+Macromolecule #7: 5-oxidanyl-4-oxidanylidene-1-[(1-pyrrolo[2,3-b]pyridin-1-ylcyclop...
+Macromolecule #8: MAGNESIUM ION
+Macromolecule #9: 5'-O-[(S)-hydroxy{[(S)-hydroxy(phosphonooxy)phosphoryl]amino}phos...
+Macromolecule #10: water
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
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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) / Average electron dose: 35.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |