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Yorodumi- PDB-9fms: Cryo-EM structure of S. cerevisiae Rai1-Rat1-Rtt103(252-273) complex. -
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Open data
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Basic information
| Entry | Database: PDB / ID: 9fms | ||||||
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| Title | Cryo-EM structure of S. cerevisiae Rai1-Rat1-Rtt103(252-273) complex. | ||||||
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Keywords | RNA BINDING PROTEIN / Rai1 nuclease / Rtt103 binding / structured / RNA binding | ||||||
| Function / homology | Function and homology informationRNA polymerase II termination complex / sno(s)RNA processing / positive regulation of termination of RNA polymerase II transcription / RNA NAD+-cap (NAD+-forming) hydrolase activity / termination of RNA polymerase II transcription, poly(A)-coupled / Las1 complex / termination of RNA polymerase II transcription, exosome-dependent / Butyrate Response Factor 1 (BRF1) binds and destabilizes mRNA / Tristetraprolin (TTP, ZFP36) binds and destabilizes mRNA / phosphodiesterase decapping endonuclease activity ...RNA polymerase II termination complex / sno(s)RNA processing / positive regulation of termination of RNA polymerase II transcription / RNA NAD+-cap (NAD+-forming) hydrolase activity / termination of RNA polymerase II transcription, poly(A)-coupled / Las1 complex / termination of RNA polymerase II transcription, exosome-dependent / Butyrate Response Factor 1 (BRF1) binds and destabilizes mRNA / Tristetraprolin (TTP, ZFP36) binds and destabilizes mRNA / phosphodiesterase decapping endonuclease activity / deadenylation-independent decapping of nuclear-transcribed mRNA / mRNA 5'-diphosphatase activity / RNA polymerase II C-terminal domain phosphoserine binding / NAD-cap decapping / nuclear polyadenylation-dependent rRNA catabolic process / 5'-3' RNA exonuclease activity / nuclear mRNA surveillance / transposable element silencing / maturation of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / mRNA 3'-end processing / RNA polymerase II transcribes snRNA genes / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / RNA polymerase II complex binding / nuclear-transcribed mRNA catabolic process / negative regulation of transcription elongation by RNA polymerase II / Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides / enzyme regulator activity / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / mRNA splicing, via spliceosome / mRNA processing / rRNA processing / site of double-strand break / Hydrolases; Acting on ester bonds; Exoribonucleases producing 5'-phosphomonoesters / rRNA binding / nucleotide binding / mRNA binding / chromatin / mitochondrion / DNA binding / RNA binding / metal ion binding / nucleus / cytosol Similarity search - Function | ||||||
| Biological species | ![]() | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.65 Å | ||||||
Authors | Noskova, N. / Dikunova, A. / Stefl, R. | ||||||
| Funding support | Czech Republic, 1items
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Citation | Journal: Structure / Year: 2025Title: Assembly of the Xrn2/Rat1-Rai1-Rtt103 termination complexes in mesophilic and thermophilic organisms. Authors: Alzbeta Dikunova / Nikola Noskova / Jan H Overbeck / Martin Polak / David Stelzig / David Zapletal / Karel Kubicek / Jiri Novacek / Remco Sprangers / Richard Stefl / ![]() Abstract: The 5'-3' exoribonuclease Xrn2, known as Rat1 in yeasts, terminates mRNA transcription by RNA polymerase II (RNAPII). In the torpedo model of termination, the activity of Xrn2/Rat1 is enhanced by ...The 5'-3' exoribonuclease Xrn2, known as Rat1 in yeasts, terminates mRNA transcription by RNA polymerase II (RNAPII). In the torpedo model of termination, the activity of Xrn2/Rat1 is enhanced by Rai1, which is recruited to the termination site by Rtt103, an adaptor protein binding to the RNAPII C-terminal domain (CTD). The overall architecture of the Xrn2/Rat1-Rai1-Rtt103 complex remains unknown. We combined structural biology methods to characterize the torpedo complex from Saccharomyces cerevisiae and Chaetomium thermophilum. Comparison of the structures from these organisms revealed a conserved protein core fold of the subunits, but significant variability in their interaction interfaces. We found that in the mesophile, Rtt103 utilizes an unstructured region to augment a Rai1 β-sheet, while in the thermophile Rtt103 binds to a C-terminal helix of Rai1 via its CTD-interacting domain with an α-helical fold. These different torpedo complex assemblies reflect adaptations to the environment and impact complex recruitment to RNAPII. | ||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 9fms.cif.gz | 380.4 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb9fms.ent.gz | 302.8 KB | Display | PDB format |
| PDBx/mmJSON format | 9fms.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 9fms_validation.pdf.gz | 1.3 MB | Display | wwPDB validaton report |
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| Full document | 9fms_full_validation.pdf.gz | 1.3 MB | Display | |
| Data in XML | 9fms_validation.xml.gz | 41.2 KB | Display | |
| Data in CIF | 9fms_validation.cif.gz | 61.3 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/fm/9fms ftp://data.pdbj.org/pub/pdb/validation_reports/fm/9fms | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 50566MC ![]() 8q6vC ![]() 9exsC C: citing same article ( M: map data used to model this data |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
| #1: Protein | Mass: 116084.930 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: RAT1 / Production host: ![]() |
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| #2: Protein/peptide | Mass: 2454.404 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() |
| #3: Protein | Mass: 44571.445 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: RAI1, YGL246C, NRE387 / Production host: ![]() References: UniProt: P53063, Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides |
| #4: Chemical | ChemComp-MG / |
| Has ligand of interest | Y |
| Has protein modification | N |
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
| Component | Name: Cryo-EM structure of S. cerevisiae Rai1-Rat1-Rtt103(252-273) complex. Type: COMPLEX / Entity ID: #3, #1-#2 / Source: RECOMBINANT | |||||||||||||||||||||||||
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| Source (natural) | Organism: ![]() | |||||||||||||||||||||||||
| Source (recombinant) | Organism: ![]() | |||||||||||||||||||||||||
| Buffer solution | pH: 8 | |||||||||||||||||||||||||
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| Specimen | Conc.: 1.3 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | |||||||||||||||||||||||||
| Specimen support | Grid material: GOLD / Grid type: UltrAuFoil R1.2/1.3 | |||||||||||||||||||||||||
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 3500 nm / Nominal defocus min: 800 nm |
| Image recording | Electron dose: 40 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 4091013 | ||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 2.65 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 284130 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||
| Atomic model building | Protocol: FLEXIBLE FIT / Space: REAL Details: As initial model was used previously estimated ScRai1-Rat1 dimer. The position of investigated peptide was predicted by AlphaFold and manually built into the corresponding cryo-EM using Coot. ...Details: As initial model was used previously estimated ScRai1-Rat1 dimer. The position of investigated peptide was predicted by AlphaFold and manually built into the corresponding cryo-EM using Coot. For final geometry estimation was used ISOLDE. | ||||||||||||||||||||||||||||||||||||||||
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