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Open data
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Basic information
| Entry | ![]() | |||||||||
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| Title | S.c INO80 in complex with Xenopus 0/40 nucleosome | |||||||||
Map data | S.c INO80 bound to Xenopus 0/40 nucleosome, fullmap | |||||||||
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Keywords | Chromatin Remodeler / nucleosome / DNA BINDING PROTEIN / DNA BINDING PROTEIN-DNA complex | |||||||||
| Function / homology | Function and homology informationTTT Hsp90 cochaperone complex / R2TP complex / regulation of TOR signaling / Swr1 complex / Ino80 complex / telomere maintenance via recombination / ATP-dependent chromatin remodeler activity / box C/D snoRNP assembly / regulation of metabolic process / 3'-5' DNA helicase activity ...TTT Hsp90 cochaperone complex / R2TP complex / regulation of TOR signaling / Swr1 complex / Ino80 complex / telomere maintenance via recombination / ATP-dependent chromatin remodeler activity / box C/D snoRNP assembly / regulation of metabolic process / 3'-5' DNA helicase activity / cellular response to stress / NuA4 histone acetyltransferase complex / chromosome, centromeric region / subtelomeric heterochromatin formation / enzyme regulator activity / DNA helicase activity / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / rRNA processing / structural constituent of chromatin / nucleosome / heterochromatin formation / nucleosome assembly / 5'-3' DNA helicase activity / histone binding / DNA helicase / transcription by RNA polymerase II / chromosome, telomeric region / protein stabilization / chromatin remodeling / protein heterodimerization activity / DNA repair / regulation of DNA-templated transcription / regulation of transcription by RNA polymerase II / chromatin / positive regulation of transcription by RNA polymerase II / ATP hydrolysis activity / DNA binding / ATP binding / nucleus / cytoplasm Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.3 Å | |||||||||
Authors | Wu H / Kaur U / Narlikar GJ / Cheng YF | |||||||||
| Funding support | United States, 1 items
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Citation | Journal: Science / Year: 2025Title: Autoinhibition imposed by a large conformational switch of INO80 regulates nucleosome positioning. Authors: Upneet Kaur / Hao Wu / Yifan Cheng / Geeta J Narlikar / ![]() Abstract: Increasing the flanking DNA from 40 to 80 base pairs (bp) causes ~100-fold faster nucleosome sliding by INO80. A prevalent hypothesis posits that the Arp8 module within INO80 enables a ruler-like ...Increasing the flanking DNA from 40 to 80 base pairs (bp) causes ~100-fold faster nucleosome sliding by INO80. A prevalent hypothesis posits that the Arp8 module within INO80 enables a ruler-like activity. Using cryogenic electron microscopy, we show that on nucleosomes with 40 bp of flanking DNA, the Arp8 module rotates 180° away from the DNA. Deleting the Arp8 module enables rapid sliding irrespective of flanking DNA length. Thus, rather than enabling a ruler-like activity, the Arp8 module acts as a brake on INO80 remodeling when flanking DNA is short. This autoinhibition-based mechanism has broad implications for understanding how primitive nucleosome mobilization enzymes may have evolved into sophisticated remodelers. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_45397.map.gz | 171.2 MB | EMDB map data format | |
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| Header (meta data) | emd-45397-v30.xml emd-45397.xml | 32.7 KB 32.7 KB | Display Display | EMDB header |
| Images | emd_45397.png | 59.9 KB | ||
| Filedesc metadata | emd-45397.cif.gz | 9.6 KB | ||
| Others | emd_45397_additional_1.map.gz emd_45397_half_map_1.map.gz emd_45397_half_map_2.map.gz | 295.1 MB 318.6 MB 318.6 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-45397 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-45397 | HTTPS FTP |
-Validation report
| Summary document | emd_45397_validation.pdf.gz | 1.1 MB | Display | EMDB validaton report |
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| Full document | emd_45397_full_validation.pdf.gz | 1.1 MB | Display | |
| Data in XML | emd_45397_validation.xml.gz | 17.3 KB | Display | |
| Data in CIF | emd_45397_validation.cif.gz | 20.7 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-45397 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-45397 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9canMC ![]() 9c9gC ![]() 9c9sC ![]() 9c9tC ![]() 9c9xC ![]() 9c9zC ![]() 9catC ![]() 9cauC ![]() 9cb7C ![]() 9ccdC M: atomic model generated by this map C: citing same article ( |
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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_45397.map.gz / Format: CCP4 / Size: 343 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Annotation | S.c INO80 bound to Xenopus 0/40 nucleosome, fullmap | ||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 0.831 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Additional map: S.c INO80 bound to Xenopus 0/40 nucleosome, the Arp8 Module
| File | emd_45397_additional_1.map | ||||||||||||
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| Annotation | S.c INO80 bound to Xenopus 0/40 nucleosome, the Arp8 Module | ||||||||||||
| Projections & Slices |
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| Density Histograms |
-Half map: S.c INO80 bound to Xenopus 0/40 nucleosome, halfmap2
| File | emd_45397_half_map_1.map | ||||||||||||
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| Annotation | S.c INO80 bound to Xenopus 0/40 nucleosome, halfmap2 | ||||||||||||
| Projections & Slices |
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| Density Histograms |
-Half map: S.c INO80 bound to Xenopus 0/40 nucleosome, halfmap1
| File | emd_45397_half_map_2.map | ||||||||||||
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| Annotation | S.c INO80 bound to Xenopus 0/40 nucleosome, halfmap1 | ||||||||||||
| Projections & Slices |
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| Density Histograms |
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Sample components
+Entire : S.c INO80 in complex with Xenopus 0/40 nucleosome
+Supramolecule #1: S.c INO80 in complex with Xenopus 0/40 nucleosome
+Macromolecule #1: Histone H3
+Macromolecule #2: Histone H4
+Macromolecule #3: Histone H2A
+Macromolecule #4: Histone H2B 1.1
+Macromolecule #7: Chromatin-remodeling ATPase INO80
+Macromolecule #8: Actin-related protein 5
+Macromolecule #9: Chromatin-remodeling complex subunit IES6
+Macromolecule #10: RuvB-like protein 1
+Macromolecule #11: RuvB-like protein 2
+Macromolecule #12: Ino eighty subunit 2
+Macromolecule #5: DNA (227-MER)
+Macromolecule #6: DNA (227-MER)
+Macromolecule #13: ADENOSINE-5'-DIPHOSPHATE
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | cell |
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Sample preparation
| Buffer | pH: 7.5 |
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| Vitrification | Cryogen name: OTHER |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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About Yorodumi




Keywords
Authors
United States, 1 items
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Processing
FIELD EMISSION GUN
