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Yorodumi- EMDB-44074: Cryo-EM structure of native SWR1 bound to DNA (composite structure) -
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Open data
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Basic information
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| Title | Cryo-EM structure of native SWR1 bound to DNA (composite structure) | ||||||||||||
Map data | Composite cryo-EM map of SWR1-DNA complex. | ||||||||||||
Sample |
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Keywords | Chromatin Remodeler / Snf2 family ATPase / histone exchange / H2A.Z / GENE REGULATION | ||||||||||||
| Function / homology | Function and homology informationTTT Hsp90 cochaperone complex / R2TP complex / protein targeting to vacuole / Swr1 complex / Ino80 complex / box C/D snoRNP assembly / 3'-5' DNA helicase activity / NuA4 histone acetyltransferase complex / nucleosome binding / DNA helicase activity ...TTT Hsp90 cochaperone complex / R2TP complex / protein targeting to vacuole / Swr1 complex / Ino80 complex / box C/D snoRNP assembly / 3'-5' DNA helicase activity / NuA4 histone acetyltransferase complex / nucleosome binding / DNA helicase activity / nuclear periphery / rRNA processing / 5'-3' DNA helicase activity / histone binding / DNA helicase / protein stabilization / chromatin remodeling / DNA repair / regulation of DNA-templated transcription / regulation of transcription by RNA polymerase II / chromatin / ATP hydrolysis activity / zinc ion binding / ATP binding / nucleus / cytoplasm Similarity search - Function | ||||||||||||
| Biological species | ![]() ![]() | ||||||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.3 Å | ||||||||||||
Authors | Louder RK / Park G / Wu C | ||||||||||||
| Funding support | United States, 3 items
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Citation | Journal: Cell / Year: 2024Title: Molecular basis of global promoter sensing and nucleosome capture by the SWR1 chromatin remodeler. Authors: Robert K Louder / Giho Park / Ziyang Ye / Justin S Cha / Anne M Gardner / Qin Lei / Anand Ranjan / Eva Höllmüller / Florian Stengel / B Franklin Pugh / Carl Wu / ![]() Abstract: The SWR1 chromatin remodeling complex is recruited to +1 nucleosomes downstream of transcription start sites of eukaryotic promoters, where it exchanges histone H2A for the specialized variant H2A.Z. ...The SWR1 chromatin remodeling complex is recruited to +1 nucleosomes downstream of transcription start sites of eukaryotic promoters, where it exchanges histone H2A for the specialized variant H2A.Z. Here, we use cryoelectron microscopy (cryo-EM) to resolve the structural basis of the SWR1 interaction with free DNA, revealing a distinct open conformation of the Swr1 ATPase that enables sliding from accessible DNA to nucleosomes. A complete structural model of the SWR1-nucleosome complex illustrates critical roles for Swc2 and Swc3 subunits in oriented nucleosome engagement by SWR1. Moreover, an extended DNA-binding α helix within the Swc3 subunit enables sensing of nucleosome linker length and is essential for SWR1-promoter-specific recruitment and activity. The previously unresolved N-SWR1 subcomplex forms a flexible extended structure, enabling multivalent recognition of acetylated histone tails by reader domains to further direct SWR1 toward the +1 nucleosome. Altogether, our findings provide a generalizable mechanism for promoter-specific targeting of chromatin and transcription complexes. | ||||||||||||
| History |
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Structure visualization
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_44074.map.gz | 4.5 MB | EMDB map data format | |
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| Header (meta data) | emd-44074-v30.xml emd-44074.xml | 32 KB 32 KB | Display Display | EMDB header |
| Images | emd_44074.png | 165.8 KB | ||
| Filedesc metadata | emd-44074.cif.gz | 10.1 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-44074 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-44074 | HTTPS FTP |
-Validation report
| Summary document | emd_44074_validation.pdf.gz | 360.9 KB | Display | EMDB validaton report |
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| Full document | emd_44074_full_validation.pdf.gz | 360.4 KB | Display | |
| Data in XML | emd_44074_validation.xml.gz | 7 KB | Display | |
| Data in CIF | emd_44074_validation.cif.gz | 8.2 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-44074 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-44074 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9b1dMC ![]() 9b1eC C: citing same article ( M: atomic model generated by this map |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_44074.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Annotation | Composite cryo-EM map of SWR1-DNA complex. | ||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.03 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 : Native SWR1 bound to DNA.
+Supramolecule #1: Native SWR1 bound to DNA.
+Supramolecule #2: Native SWR1 complex
+Macromolecule #1: Helicase SWR1
+Macromolecule #2: Vacuolar protein sorting-associated protein 72
+Macromolecule #3: Actin-like protein ARP6
+Macromolecule #4: Vacuolar protein sorting-associated protein 71
+Macromolecule #5: RuvB-like protein 1
+Macromolecule #6: RuvB-like protein 2
+Macromolecule #7: DNA (147-MER)
+Macromolecule #8: DNA (147-MER)
+Macromolecule #9: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
+Macromolecule #10: MAGNESIUM ION
+Macromolecule #11: ZINC ION
+Macromolecule #12: ADENOSINE-5'-DIPHOSPHATE
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Concentration | 0.125 mg/mL | ||||||||||||||||||||||||||||||
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| Buffer | pH: 7.6 Component:
Details: 20 mM HEPES pH 7.6, 0.2 mM EDTA, 2 mM MgCl2, 100 mM NaCl, 0.01% IGEPAL CA-630, 3.5% glycerol, and 0.25 mM TCEP, 1 mM ATP-gamma-s, 0.05% glutaraldehyde. | ||||||||||||||||||||||||||||||
| Grid | Model: Quantifoil R2/1 / Material: COPPER / Mesh: 400 / Support film - Material: GRAPHENE OXIDE / Support film - topology: CONTINUOUS / Pretreatment - Type: PLASMA CLEANING / Pretreatment - Time: 90 sec. / Pretreatment - Atmosphere: AIR | ||||||||||||||||||||||||||||||
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV / Details: 6 second blot time and blot force of 12.. |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Software | Name: SerialEM (ver. 3.7.6) |
| Image recording | Film or detector model: GATAN K3 (6k x 4k) / Number grids imaged: 1 / Number real images: 5379 / Average exposure time: 4.0 sec. / Average electron dose: 54.0 e/Å2 Details: Each micrograph was fractionated into 64 frames within a 4 second exposure. |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | C2 aperture diameter: 70.0 µm / Calibrated magnification: 48543 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 3.6 µm / Nominal defocus min: 2.0 µm |
| Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
| Initial model |
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| Software | Name: ISOLDE (ver. 1.7) | ||||||
| Refinement | Space: REAL / Protocol: FLEXIBLE FIT / Overall B value: 84 / Target criteria: Cross-correlation coefficient | ||||||
| Output model | ![]() PDB-9b1d: |
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About Yorodumi



Keywords
Authors
United States, 3 items
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FIELD EMISSION GUN


