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- EMDB-39226: Cryo EM structure of Komagataella phaffii RNAPII-Rat1-Rai1 pre-te... -
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Basic information
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Title | Cryo EM structure of Komagataella phaffii RNAPII-Rat1-Rai1 pre-termination complex | |||||||||
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![]() | transcription termination / RNA polymerase II / TRANSCRIPTION | |||||||||
Function / homology | ![]() mRNA 5'-diphosphatase activity / regulation of septum digestion after cytokinesis / NAD-cap decapping / siRNA-mediated pericentric heterochromatin formation / 5'-3' RNA exonuclease activity / nuclease activity / RPB4-RPB7 complex / nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / termination of RNA polymerase II transcription / positive regulation of nuclear-transcribed mRNA poly(A) tail shortening ...mRNA 5'-diphosphatase activity / regulation of septum digestion after cytokinesis / NAD-cap decapping / siRNA-mediated pericentric heterochromatin formation / 5'-3' RNA exonuclease activity / nuclease activity / RPB4-RPB7 complex / nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / termination of RNA polymerase II transcription / positive regulation of nuclear-transcribed mRNA poly(A) tail shortening / termination of RNA polymerase III transcription / termination of RNA polymerase I transcription / transcription initiation at RNA polymerase III promoter / transcription initiation at RNA polymerase I promoter / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / nuclear-transcribed mRNA catabolic process / positive regulation of translational initiation / Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides / RNA polymerase I complex / tRNA transcription by RNA polymerase III / RNA polymerase III complex / transcription elongation by RNA polymerase I / pericentric heterochromatin / transcription-coupled nucleotide-excision repair / RNA polymerase II, core complex / : / translation initiation factor binding / DNA-directed RNA polymerase activity / transcription initiation at RNA polymerase II promoter / transcription elongation by RNA polymerase II / P-body / DNA-templated transcription termination / ribonucleoside binding / : / : / : / : / : / : / DNA-directed RNA polymerase / mRNA processing / rRNA processing / single-stranded DNA binding / Hydrolases; Acting on ester bonds; Exoribonucleases producing 5'-phosphomonoesters / nucleic acid binding / single-stranded RNA binding / protein dimerization activity / RNA-directed RNA polymerase activity / nucleotide binding / nucleolus / DNA binding / RNA binding / zinc ion binding / nucleus / metal ion binding / cytosol Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.3 Å | |||||||||
![]() | Murayama Y / Yanagisawa T / Ehara H / Sekine S | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural basis of eukaryotic transcription termination by the Rat1 exonuclease complex. Authors: Tatsuo Yanagisawa / Yuko Murayama / Haruhiko Ehara / Mie Goto / Mari Aoki / Shun-Ichi Sekine / ![]() Abstract: The 5´-3´ exoribonuclease Rat1/Xrn2 is responsible for the termination of eukaryotic mRNA transcription by RNAPII. Rat1 forms a complex with its partner proteins, Rai1 and Rtt103, and acts as a ...The 5´-3´ exoribonuclease Rat1/Xrn2 is responsible for the termination of eukaryotic mRNA transcription by RNAPII. Rat1 forms a complex with its partner proteins, Rai1 and Rtt103, and acts as a "torpedo" to bind transcribing RNAPII and dissociate DNA/RNA from it. Here we report the cryo-electron microscopy structures of the Rat1-Rai1-Rtt103 complex and three Rat1-Rai1-associated RNAPII complexes (type-1, type-1b, and type-2) from the yeast, Komagataella phaffii. The Rat1-Rai1-Rtt103 structure revealed that Rat1 and Rai1 form a heterotetramer with a single Rtt103 bound between two Rai1 molecules. In the type-1 complex, Rat1-Rai1 forms a heterodimer and binds to the RNA exit site of RNAPII to extract RNA into the Rat1 exonuclease active site. This interaction changes the RNA path in favor of termination (the "pre-termination" state). The type-1b and type-2 complexes have no bound DNA/RNA, likely representing the "post-termination" states. These structures illustrate the termination mechanism of eukaryotic mRNA transcription. | |||||||||
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 116 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 37 KB 37 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 11.4 KB | Display | ![]() |
Images | ![]() | 77.5 KB | ||
Filedesc metadata | ![]() | 10.6 KB | ||
Others | ![]() ![]() ![]() | 28 MB 98.9 MB 98.9 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 1 MB | Display | ![]() |
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Full document | ![]() | 1 MB | Display | |
Data in XML | ![]() | 18.8 KB | Display | |
Data in CIF | ![]() | 24.7 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8yfqMC ![]() 8yf5C ![]() 8yfeC ![]() 8yfrC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.83 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
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Sample components
+Entire : Cryo EM structure of Komagataella phaffii RNAPII-Rat1-Rai1 pre-te...
+Supramolecule #1: Cryo EM structure of Komagataella phaffii RNAPII-Rat1-Rai1 pre-te...
+Macromolecule #1: DNA-directed RNA polymerase subunit
+Macromolecule #2: DNA-directed RNA polymerase subunit beta
+Macromolecule #3: RNA polymerase II third largest subunit B44, part of central core
+Macromolecule #4: RNA polymerase II subunit B32
+Macromolecule #5: DNA-directed RNA polymerases I, II, and III subunit RPABC1
+Macromolecule #6: RNA polymerase subunit ABC23, common to RNA polymerases I, II, and III
+Macromolecule #7: RNA polymerase II subunit
+Macromolecule #8: DNA-directed RNA polymerases I, II, and III subunit RPABC3
+Macromolecule #9: DNA-directed RNA polymerase subunit
+Macromolecule #10: RNA polymerase subunit ABC10-beta, common to RNA polymerases I, I...
+Macromolecule #11: RNA polymerase II subunit B12.5
+Macromolecule #12: RNA polymerase subunit ABC10-alpha
+Macromolecule #16: 5'-3' exoribonuclease
+Macromolecule #17: Decapping nuclease
+Macromolecule #13: DNA (90-mer)
+Macromolecule #14: DNA (90-mer)
+Macromolecule #15: RNA (22-mer)
+Macromolecule #18: ZINC ION
+Macromolecule #19: MAGNESIUM ION
-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 / Chamber humidity: 75 % / Chamber temperature: 283 K / Instrument: LEICA EM GP / Details: EMGP2. |
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Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 53.3 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.4 µm / Nominal defocus min: 1.6 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |