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Yorodumi- EMDB-64577: local ATPase-NCP density map of the ncBAF-nucleosome complex in t... -
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Basic information
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| Title | local ATPase-NCP density map of the ncBAF-nucleosome complex in the ADP-BeFx-bound state | |||||||||||||||||||||
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Keywords | Chromatin remodeling / SWI/SNF / Epigenetics / GENE REGULATION/DNA / GENE REGULATION-DNA complex | |||||||||||||||||||||
| Function / homology | Function and homology informationpositive regulation of glucose mediated signaling pathway / nBAF complex / npBAF complex / negative regulation of androgen receptor signaling pathway / positive regulation of transcription of nucleolar large rRNA by RNA polymerase I / neural retina development / Formation of the embryonic stem cell BAF (esBAF) complex / EGR2 and SOX10-mediated initiation of Schwann cell myelination / Formation of the canonical BAF (cBAF) complex / Formation of the polybromo-BAF (pBAF) complex ...positive regulation of glucose mediated signaling pathway / nBAF complex / npBAF complex / negative regulation of androgen receptor signaling pathway / positive regulation of transcription of nucleolar large rRNA by RNA polymerase I / neural retina development / Formation of the embryonic stem cell BAF (esBAF) complex / EGR2 and SOX10-mediated initiation of Schwann cell myelination / Formation of the canonical BAF (cBAF) complex / Formation of the polybromo-BAF (pBAF) complex / Formation of neuronal progenitor and neuronal BAF (npBAF and nBAF) / Formation of the non-canonical BAF (ncBAF) complex / nucleosome array spacer activity / regulation of G0 to G1 transition / Tat protein binding / RNA polymerase I preinitiation complex assembly / host-mediated activation of viral transcription / SWI/SNF complex / ATP-dependent chromatin remodeler activity / nucleosome disassembly / regulation of mitotic metaphase/anaphase transition / nuclear androgen receptor binding / positive regulation of T cell differentiation / regulation of nucleotide-excision repair / positive regulation of stem cell population maintenance / positive regulation of double-strand break repair / Regulation of MITF-M-dependent genes involved in pigmentation / negative regulation of cell differentiation / RUNX1 interacts with co-factors whose precise effect on RUNX1 targets is not known / positive regulation of myoblast differentiation / ATP-dependent activity, acting on DNA / positive regulation of Wnt signaling pathway / positive regulation of signal transduction by p53 class mediator / regulation of G1/S transition of mitotic cell cycle / Chromatin modifying enzymes / DNA polymerase binding / Interleukin-7 signaling / transcription initiation-coupled chromatin remodeling / transcription coregulator binding / helicase activity / positive regulation of cell differentiation / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / negative regulation of cell growth / positive regulation of miRNA transcription / fibrillar center / Negative Regulation of CDH1 Gene Transcription / Formation of the beta-catenin:TCF transactivating complex / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / nucleosomal DNA binding / kinetochore / nuclear matrix / RMTs methylate histone arginines / innate immune response in mucosa / p53 binding / structural constituent of chromatin / transcription corepressor activity / nucleosome / nucleosome assembly / positive regulation of cold-induced thermogenesis / nervous system development / antimicrobial humoral immune response mediated by antimicrobial peptide / heterochromatin formation / histone binding / antibacterial humoral response / chromatin organization / transcription coactivator activity / chromatin remodeling / protein heterodimerization activity / negative regulation of DNA-templated transcription / positive regulation of cell population proliferation / chromatin binding / regulation of transcription by RNA polymerase II / nucleolus / positive regulation of DNA-templated transcription / chromatin / negative regulation of transcription by RNA polymerase II / positive regulation of transcription by RNA polymerase II / ATP hydrolysis activity / protein-containing complex / DNA binding / : / RNA binding / nucleoplasm / ATP binding / membrane / identical protein binding / nucleus Similarity search - Function | |||||||||||||||||||||
| Biological species | Homo sapiens (human) / | |||||||||||||||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.05 Å | |||||||||||||||||||||
Authors | Sun F / Zou B / Li H / Xu C / Luo Q / Wang C / Xu P / Pei D / Chen J / Qin D ...Sun F / Zou B / Li H / Xu C / Luo Q / Wang C / Xu P / Pei D / Chen J / Qin D / Zhang Y / He J | |||||||||||||||||||||
| Funding support | China, 6 items
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Citation | Journal: Nucleic Acids Res / Year: 2026Title: Structural basis for BCL7B-mediated ncBAF-nucleosome engagement. Authors: Fahui Sun / Binqian Zou / He Li / Chongshen Xu / Qiaohong Luo / Chi Wang / Pengqi Xu / Duanqing Pei / Jiekai Chen / Dajiang Qin / Ying Zhang / Jun He / ![]() Abstract: The mammalian SWI/SNF family of chromatin remodelers comprises BRG1/BRM-associated factor (cBAF), polybromo-associated BAF (PBAF), and non-canonical BAF (ncBAF) complexes, which slide and disassemble ...The mammalian SWI/SNF family of chromatin remodelers comprises BRG1/BRM-associated factor (cBAF), polybromo-associated BAF (PBAF), and non-canonical BAF (ncBAF) complexes, which slide and disassemble nucleosomes to regulate gene expression and chromatin structure dependent on ATP hydrolysis energy. While the chromatin engagement mechanisms of cBAF and PBAF have been structurally resolved, the molecular architecture governing ncBAF interaction with chromatin remains elusive. In this study, by integrating cryo-electron microscopy, biochemical assays, and cross-linking mass spectrometry, we resolved the conformational transition of ncBAF-nucleosome complexes from nucleotide-free to nucleotide-bound states. Our analyses establish BCL7 proteins as dynamic molecular tethers connecting the ARP module to the nucleosomal acidic patch and demonstrate that BCL7B promotes ncBAF-mediated nucleosome remodeling, with BRG1-catalyzed ATP hydrolysis triggering conformational changes that modulate BCL7-mediated histone association. Structurally and biochemically, we further demonstrate that β-actin within the BCL7-containing ARP module retains ATP hydrolysis activity, rendering its exposed pointed end structurally compatible with incorporation into the barbed end of nuclear actin filaments, which provides a potential molecular basis for coordinating nuclear actin networks with chromatin remodeling. Collectively, our findings unravel a dynamic role of BCL7 in regulating ncBAF-mediated chromatin remodeling and establish a distinct chromatin engagement mode of ncBAF from that of cBAF/PBAF. | |||||||||||||||||||||
| History |
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_64577.map.gz | 200.4 MB | EMDB map data format | |
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| Header (meta data) | emd-64577-v30.xml emd-64577.xml | 30.4 KB 30.4 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_64577_fsc.xml | 13.7 KB | Display | FSC data file |
| Images | emd_64577.png | 59.4 KB | ||
| Masks | emd_64577_msk_1.map | 216 MB | Mask map | |
| Filedesc metadata | emd-64577.cif.gz | 8.5 KB | ||
| Others | emd_64577_half_map_1.map.gz emd_64577_half_map_2.map.gz | 200.4 MB 200.4 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-64577 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-64577 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9ux9MC ![]() 9uxaC ![]() 9uxbC ![]() 9uxcC 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_64577.map.gz / Format: CCP4 / Size: 216 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: 0.73 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Mask #1
| File | emd_64577_msk_1.map | ||||||||||||
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| Density Histograms |
-Half map: #2
| File | emd_64577_half_map_1.map | ||||||||||||
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| Density Histograms |
-Half map: #1
| File | emd_64577_half_map_2.map | ||||||||||||
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| Density Histograms |
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Sample components
+Entire : ncBAF-nucleosome complex
+Supramolecule #1: ncBAF-nucleosome complex
+Supramolecule #2: Xenopus nucleosome
+Supramolecule #3: The ARP module of ncBAF complex
+Macromolecule #1: Histone H3
+Macromolecule #2: Histone H4
+Macromolecule #3: Histone H2A
+Macromolecule #4: Histone H2B
+Macromolecule #7: SWI/SNF-related matrix-associated actin-dependent regulator of ch...
+Macromolecule #5: DNA (167-MER)
+Macromolecule #6: DNA (167-MER)
+Macromolecule #8: BERYLLIUM TRIFLUORIDE ION
+Macromolecule #9: MAGNESIUM ION
+Macromolecule #10: 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
| Buffer | pH: 7.5 |
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| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K |
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Electron microscopy
| Microscope | TFS KRIOS |
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| Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 50.0 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: 2.4 µm / Nominal defocus min: 0.8 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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About Yorodumi



Keywords
Homo sapiens (human)
Authors
China, 6 items
Citation












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Processing
FIELD EMISSION GUN

