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Open data
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Basic information
Entry | Database: PDB / ID: 7bfp | ||||||
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Title | Structure of the Integrator cleavage module with INTS4/9/11 | ||||||
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![]() | NUCLEAR PROTEIN / Nuclease / Integrator / 3'-end processing | ||||||
Function / homology | ![]() snRNA 3'-end processing / snRNA processing / integrator complex / regulation of transcription elongation by RNA polymerase II / Hydrolases; Acting on ester bonds; Endoribonucleases producing 3'-phosphomonoesters / RNA polymerase II transcribes snRNA genes / RNA endonuclease activity / negative regulation of transforming growth factor beta receptor signaling pathway / blood microparticle / nucleolus ...snRNA 3'-end processing / snRNA processing / integrator complex / regulation of transcription elongation by RNA polymerase II / Hydrolases; Acting on ester bonds; Endoribonucleases producing 3'-phosphomonoesters / RNA polymerase II transcribes snRNA genes / RNA endonuclease activity / negative regulation of transforming growth factor beta receptor signaling pathway / blood microparticle / nucleolus / nucleoplasm / nucleus / cytosol / cytoplasm Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.56 Å | ||||||
![]() | Pfleiderer, M.M. / Galej, W.P. | ||||||
![]() | ![]() Title: Structure of the catalytic core of the Integrator complex. Authors: Moritz M Pfleiderer / Wojciech P Galej / ![]() Abstract: The Integrator is a specialized 3' end-processing complex involved in cleavage and transcription termination of a subset of nascent RNA polymerase II transcripts, including small nuclear RNAs (snRNAs) ...The Integrator is a specialized 3' end-processing complex involved in cleavage and transcription termination of a subset of nascent RNA polymerase II transcripts, including small nuclear RNAs (snRNAs). We provide evidence of the modular nature of the Integrator complex by biochemically characterizing its two subcomplexes, INTS5/8 and INTS10/13/14. Using cryoelectron microscopy (cryo-EM), we determined a 3.5-Å-resolution structure of the INTS4/9/11 ternary complex, which constitutes Integrator's catalytic core. Our structure reveals the spatial organization of the catalytic nuclease INTS11, bound to its catalytically impaired homolog INTS9 via several interdependent interfaces. INTS4, a helical repeat protein, plays a key role in stabilizing nuclease domains and other components. In this assembly, all three proteins form a composite electropositive groove, suggesting a putative RNA binding path within the complex. Comparison with other 3' end-processing machineries points to distinct features and a unique architecture of the Integrator's catalytic module. | ||||||
History |
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Structure visualization
Movie |
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 291.1 KB | Display | ![]() |
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PDB format | ![]() | 215.3 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 12165MC ![]() 7bfqC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
#1: Protein | Mass: 73891.219 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#2: Protein | Mass: 110164.773 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#3: Protein | Mass: 72690.008 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() References: UniProt: Q5TA45, Hydrolases; Acting on ester bonds; Endoribonucleases producing 3'-phosphomonoesters |
#4: Protein/peptide | Mass: 3081.790 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
-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: Heterotrimeric cleavage module of the Integrator complex Type: COMPLEX / Entity ID: all / Source: RECOMBINANT |
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Molecular weight | Value: 257 kDa/nm / Experimental value: NO |
Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() |
Buffer solution | pH: 7.8 / Details: 150 mM KCl, 20 mM HEPES-KOH pH 7.8 |
Specimen | Conc.: 0.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: UltrAuFoil R1.2/1.3 |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 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: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 165000 X / Nominal defocus max: 500 nm / Nominal defocus min: 300 nm / Cs: 2.7 mm |
Image recording | Average exposure time: 5 sec. / Electron dose: 44 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 2 / Num. of real images: 19268 |
Image scans | Width: 3838 / Height: 3710 / Movie frames/image: 40 |
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Processing
Software | Name: REFMAC / Version: 5.8.0253 / Classification: refinement | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 9124445 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.56 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 26358 / Symmetry type: POINT | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: OTHER / Space: RECIPROCAL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement | Resolution: 3.56→3.56 Å / Cor.coef. Fo:Fc: 0.762 / SU B: 62.878 / SU ML: 0.823 / ESU R: 1.094 Stereochemistry target values: MAXIMUM LIKELIHOOD WITH PHASES
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Solvent computation | Solvent model: PARAMETERS FOR MASK CACLULATION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 148.632 Å2
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Refinement step | Cycle: 1 / Total: 10068 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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