+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-18764 | ||||||||||||
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Title | SWR1-hexasome complex | ||||||||||||
Map data | |||||||||||||
Sample |
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Keywords | Chromatin remodelling complex / hexasome / DNA BINDING PROTEIN | ||||||||||||
Function / homology | Function and homology information ATP-dependent H2AZ histone chaperone activity / sexual sporulation resulting in formation of a cellular spore / cupric reductase (NADH) activity / HATs acetylate histones / global genome nucleotide-excision repair / RNA polymerase I upstream activating factor complex / Condensation of Prophase Chromosomes / SIRT1 negatively regulates rRNA expression / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / R2TP complex ...ATP-dependent H2AZ histone chaperone activity / sexual sporulation resulting in formation of a cellular spore / cupric reductase (NADH) activity / HATs acetylate histones / global genome nucleotide-excision repair / RNA polymerase I upstream activating factor complex / Condensation of Prophase Chromosomes / SIRT1 negatively regulates rRNA expression / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / R2TP complex / Assembly of the ORC complex at the origin of replication / HDACs deacetylate histones / Swr1 complex / protein targeting to vacuole / Ino80 complex / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / replication fork protection complex / Oxidative Stress Induced Senescence / RMTs methylate histone arginines / postreplication repair / box C/D snoRNP assembly / recombinational repair / SUMOylation of chromatin organization proteins / ATP-dependent chromatin remodeler activity / 3'-5' DNA helicase activity / NuA4 histone acetyltransferase complex / positive regulation of transcription by RNA polymerase I / RNA Polymerase I Promoter Escape / nucleolar large rRNA transcription by RNA polymerase I / rRNA transcription / Estrogen-dependent gene expression / intracellular copper ion homeostasis / nucleosome binding / Ub-specific processing proteases / CENP-A containing nucleosome / nucleosomal DNA binding / DNA helicase activity / aerobic respiration / nuclear periphery / transcription initiation-coupled chromatin remodeling / helicase activity / heterochromatin formation / structural constituent of chromatin / rRNA processing / nucleosome / nucleosome assembly / chromatin organization / histone binding / 5'-3' DNA helicase activity / DNA helicase / molecular adaptor activity / protein stabilization / chromatin remodeling / protein heterodimerization activity / DNA repair / regulation of DNA-templated transcription / chromatin / regulation of transcription by RNA polymerase II / structural molecule activity / negative regulation of transcription by RNA polymerase II / ATP hydrolysis activity / DNA binding / ATP binding / identical protein binding / nucleus / metal ion binding / cytosol / cytoplasm Similarity search - Function | ||||||||||||
Biological species | Saccharomyces cerevisiae S288C (yeast) / synthetic construct (others) | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.5 Å | ||||||||||||
Authors | Jalal ASB / Wigley DB | ||||||||||||
Funding support | United Kingdom, 3 items
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Citation | Journal: Mol Cell / Year: 2024 Title: Stabilization of the hexasome intermediate during histone exchange by yeast SWR1 complex. Authors: Adam S B Jalal / Paul Girvan / Eugene Y D Chua / Lexin Liu / Shijie Wang / Elizabeth A McCormack / Michael T Skehan / Carol L Knight / David S Rueda / Dale B Wigley / Abstract: The yeast SWR1 complex catalyzes the exchange of histone H2A/H2B dimers in nucleosomes with Htz1/H2B dimers. We use cryoelectron microscopy to determine the structure of an enzyme-bound hexasome ...The yeast SWR1 complex catalyzes the exchange of histone H2A/H2B dimers in nucleosomes with Htz1/H2B dimers. We use cryoelectron microscopy to determine the structure of an enzyme-bound hexasome intermediate in the reaction pathway of histone exchange, in which an H2A/H2B dimer has been extracted from a nucleosome prior to the insertion of a dimer comprising Htz1/H2B. The structure reveals a key role for the Swc5 subunit in stabilizing the unwrapping of DNA from the histone core of the hexasome. By engineering a crosslink between an Htz1/H2B dimer and its chaperone protein Chz1, we show that this blocks histone exchange by SWR1 but allows the incoming chaperone-dimer complex to insert into the hexasome. We use this reagent to trap an SWR1/hexasome complex with an incoming Htz1/H2B dimer that shows how the reaction progresses to the next step. Taken together the structures reveal insights into the mechanism of histone exchange by SWR1 complex. | ||||||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_18764.map.gz | 20.4 MB | EMDB map data format | |
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Header (meta data) | emd-18764-v30.xml emd-18764.xml | 32.3 KB 32.3 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_18764_fsc.xml | 17.1 KB | Display | FSC data file |
Images | emd_18764.png | 85.4 KB | ||
Filedesc metadata | emd-18764.cif.gz | 9.5 KB | ||
Others | emd_18764_half_map_1.map.gz emd_18764_half_map_2.map.gz | 339.7 MB 339.8 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-18764 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-18764 | HTTPS FTP |
-Validation report
Summary document | emd_18764_validation.pdf.gz | 929.8 KB | Display | EMDB validaton report |
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Full document | emd_18764_full_validation.pdf.gz | 929.5 KB | Display | |
Data in XML | emd_18764_validation.xml.gz | 24.6 KB | Display | |
Data in CIF | emd_18764_validation.cif.gz | 32.7 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-18764 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-18764 | HTTPS FTP |
-Related structure data
Related structure data | 8qyvMC 8qz0C 9fbwC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_18764.map.gz / Format: CCP4 / Size: 421.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.85 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #2
File | emd_18764_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_18764_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Sample components
+Entire : SWR1-hexasome complex
+Supramolecule #1: SWR1-hexasome complex
+Macromolecule #1: Histone H3
+Macromolecule #2: Histone H4
+Macromolecule #3: Histone H2A.1
+Macromolecule #4: Histone H2B.1
+Macromolecule #7: Helicase SWR1
+Macromolecule #8: SWR1-complex protein 5
+Macromolecule #9: Actin-like protein ARP6
+Macromolecule #10: Vacuolar protein sorting-associated protein 71
+Macromolecule #11: RuvB-like protein 1
+Macromolecule #12: RuvB-like protein 2
+Macromolecule #13: Vacuolar protein sorting-associated protein 72
+Macromolecule #5: DNA (118-MER)
+Macromolecule #6: DNA (118-MER)
+Macromolecule #14: ADENOSINE-5'-DIPHOSPHATE
+Macromolecule #15: BERYLLIUM TRIFLUORIDE ION
+Macromolecule #16: MAGNESIUM ION
+Macromolecule #17: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 40.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 5.0 µm / Nominal defocus min: 0.3 µm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |