+Open data
-Basic information
Entry | Database: PDB / ID: 8qri | ||||||
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Title | TRRAP and EP400 in the human Tip60 complex | ||||||
Components |
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Keywords | TRANSCRIPTION / Eukaryotic transcription / Histone acetyltransferase / chromatin remodeling / Complex | ||||||
Function / homology | Function and homology information transcription factor TFTC complex / Swr1 complex / protein antigen binding / regulation of double-strand break repair / SAGA complex / ATP-dependent chromatin remodeler activity / Formation of Senescence-Associated Heterochromatin Foci (SAHF) / NuA4 histone acetyltransferase complex / regulation of RNA splicing / positive regulation of double-strand break repair via homologous recombination ...transcription factor TFTC complex / Swr1 complex / protein antigen binding / regulation of double-strand break repair / SAGA complex / ATP-dependent chromatin remodeler activity / Formation of Senescence-Associated Heterochromatin Foci (SAHF) / NuA4 histone acetyltransferase complex / regulation of RNA splicing / positive regulation of double-strand break repair via homologous recombination / regulation of DNA repair / helicase activity / transcription coregulator activity / Formation of the beta-catenin:TCF transactivating complex / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / DNA Damage/Telomere Stress Induced Senescence / nucleosome / chromatin organization / HATs acetylate histones / regulation of apoptotic process / regulation of cell cycle / hydrolase activity / Ub-specific processing proteases / nuclear speck / DNA repair / chromatin binding / regulation of DNA-templated transcription / regulation of transcription by RNA polymerase II / positive regulation of DNA-templated transcription / Golgi apparatus / DNA binding / nucleoplasm / ATP binding / nucleus Similarity search - Function | ||||||
Biological species | Homo sapiens (human) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.5 Å | ||||||
Authors | Li, C. / Smirnova, E. / Schnitzler, C. / Crucifix, C. / Concordet, J.P. / Brion, A. / Poterszman, A. / SChultz, P. / Papai, G. / Ben-Shem, A. | ||||||
Funding support | France, 1items
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Citation | Journal: Nature / Year: 2024 Title: Structure of the human TIP60-C histone exchange and acetyltransferase complex. Authors: Changqing Li / Ekaterina Smirnova / Charlotte Schnitzler / Corinne Crucifix / Jean Paul Concordet / Alice Brion / Arnaud Poterszman / Patrick Schultz / Gabor Papai / Adam Ben-Shem / Abstract: Chromatin structure is a key regulator of DNA transcription, replication and repair. In humans, the TIP60-EP400 complex (TIP60-C) is a 20-subunit assembly that affects chromatin structure through two ...Chromatin structure is a key regulator of DNA transcription, replication and repair. In humans, the TIP60-EP400 complex (TIP60-C) is a 20-subunit assembly that affects chromatin structure through two enzymatic activities: ATP-dependent exchange of histone H2A-H2B for H2A.Z-H2B, and histone acetylation. In yeast, however, these activities are performed by two independent complexes-SWR1 and NuA4, respectively. How the activities of the two complexes are merged into one supercomplex in humans, and what this association entails for the structure and mechanism of the proteins and their recruitment to chromatin, are unknown. Here we describe the structure of the endogenous human TIP60-C. We find a three-lobed architecture composed of SWR1-like (SWR1L) and NuA4-like (NuA4L) parts, which associate with a TRRAP activator-binding module. The huge EP400 subunit contains the ATPase motor, traverses the junction between SWR1L and NuA4L twice and constitutes the scaffold of the three-lobed architecture. NuA4L is completely rearranged compared with its yeast counterpart. TRRAP is flexibly tethered to NuA4L-in stark contrast to its robust connection to the completely opposite side of NuA4 in yeast. A modelled nucleosome bound to SWR1L, supported by tests of TIP60-C activity, suggests that some aspects of the histone exchange mechanism diverge from what is seen in yeast. Furthermore, a fixed actin module (as opposed to the mobile actin subcomplex in SWR1; ref. ), the flexibility of TRRAP and the weak effect of extranucleosomal DNA on exchange activity lead to a different, activator-based mode of enlisting TIP60-C to chromatin. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 8qri.cif.gz | 1.2 MB | Display | PDBx/mmCIF format |
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PDB format | pdb8qri.ent.gz | 964 KB | Display | PDB format |
PDBx/mmJSON format | 8qri.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 8qri_validation.pdf.gz | 882.4 KB | Display | wwPDB validaton report |
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Full document | 8qri_full_validation.pdf.gz | 915.3 KB | Display | |
Data in XML | 8qri_validation.xml.gz | 86.5 KB | Display | |
Data in CIF | 8qri_validation.cif.gz | 131.9 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/qr/8qri ftp://data.pdbj.org/pub/pdb/validation_reports/qr/8qri | HTTPS FTP |
-Related structure data
Related structure data | 18619MC 8qr1C C: citing same article (ref.) M: map data used to model this data |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
#1: Protein | Mass: 438139.531 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: K562 / References: UniProt: Q9Y4A5 |
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#2: Protein | Mass: 343867.312 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: K562 References: UniProt: Q96L91, Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement |
Has protein modification | Y |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: Human Tip60 complex / Type: COMPLEX / Entity ID: all / Source: NATURAL | ||||||||||||||||||||||||||||||||
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Source (natural) | Organism: Homo sapiens (human) | ||||||||||||||||||||||||||||||||
Buffer solution | pH: 8 | ||||||||||||||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 0.2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 279 K |
-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: 3200 nm / Nominal defocus min: 1500 nm / Cs: 0.01 mm / Alignment procedure: ZEMLIN TABLEAU |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 52 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
-Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 181210 / Symmetry type: POINT | |||||||||||||||||||||||||||
Atomic model building | Protocol: RIGID BODY FIT / Space: REAL |