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Open data
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Basic information
| Entry | Database: EMDB / ID: EMD-0974 | |||||||||
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| Title | Structure of nucleosome-bound human BAF complex | |||||||||
Map data | Structure of nucleosome-bound human BAF complex in the apo state | |||||||||
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Keywords | Chromatin remodeler / Complex / GENE REGULATION | |||||||||
| Function / homology | Function and homology informationnegative regulation of myeloid progenitor cell differentiation / single stranded viral RNA replication via double stranded DNA intermediate / Positive Regulation of CDH1 Gene Transcription / brahma complex / positive regulation of glucose mediated signaling pathway / nBAF complex / npBAF complex / positive regulation of norepinephrine uptake / positive regulation of telomere maintenance in response to DNA damage / regulation of DNA strand elongation ...negative regulation of myeloid progenitor cell differentiation / single stranded viral RNA replication via double stranded DNA intermediate / Positive Regulation of CDH1 Gene Transcription / brahma complex / positive regulation of glucose mediated signaling pathway / nBAF complex / npBAF complex / positive regulation of norepinephrine uptake / positive regulation of telomere maintenance in response to DNA damage / regulation of DNA strand elongation / negative regulation of androgen receptor signaling pathway / positive regulation of transcription of nucleolar large rRNA by RNA polymerase I / cellular response to cytochalasin B / neural retina development / N-acetyltransferase activity / Formation of the embryonic stem cell BAF (esBAF) complex / EGR2 and SOX10-mediated initiation of Schwann cell myelination / regulation of transepithelial transport / Formation of the canonical BAF (cBAF) complex / morphogenesis of a polarized epithelium / Formation of annular gap junctions / Formation of the dystrophin-glycoprotein complex (DGC) / structural constituent of postsynaptic actin cytoskeleton / Formation of the polybromo-BAF (pBAF) complex / Gap junction degradation / GBP-mediated host defense / protein localization to adherens junction / Formation of neuronal progenitor and neuronal BAF (npBAF and nBAF) / Formation of the non-canonical BAF (ncBAF) complex / Cell-extracellular matrix interactions / nucleosome array spacer activity / histone H3K14ac reader activity / regulation of G0 to G1 transition / dense body / Folding of actin by CCT/TriC / Tat protein binding / RNA polymerase I preinitiation complex assembly / XY body / postsynaptic actin cytoskeleton / cellular response to fatty acid / Ino80 complex / Regulation of CDH1 Function / host-mediated activation of viral transcription / apical protein localization / Prefoldin mediated transfer of substrate to CCT/TriC / Adherens junctions interactions / regulation of double-strand break repair / microtubule nucleation / SWI/SNF complex / adherens junction assembly / RHOF GTPase cycle / Sensory processing of sound by outer hair cells of the cochlea / ATP-dependent chromatin remodeler activity / nucleosome disassembly / tight junction / Sensory processing of sound by inner hair cells of the cochlea / regulation of mitotic metaphase/anaphase transition / spinal cord development / nuclear androgen receptor binding / positive regulation of T cell differentiation / maintenance of blood-brain barrier / Interaction between L1 and Ankyrins / kinetochore assembly / apical junction complex / regulation of nucleotide-excision repair / nuclear chromosome / positive regulation of stem cell population maintenance / regulation of chromosome organization / NuA4 histone acetyltransferase complex / regulation of norepinephrine uptake / transporter regulator activity / Recycling pathway of L1 / cortical cytoskeleton / positive regulation of double-strand break repair / Regulation of MITF-M-dependent genes involved in pigmentation / negative regulation of cell differentiation / establishment or maintenance of cell polarity / regulation of DNA replication / RUNX1 interacts with co-factors whose precise effect on RUNX1 targets is not known / nitric-oxide synthase binding / brush border / EPH-ephrin mediated repulsion of cells / histone H4K16ac reader activity / regulation of synaptic vesicle endocytosis / mitotic metaphase chromosome alignment / positive regulation of myoblast differentiation / RHO GTPases Activate WASPs and WAVEs / ATP-dependent activity, acting on DNA / positive regulation of Wnt signaling pathway / kinesin binding / positive regulation of signal transduction by p53 class mediator / regulation of protein localization to plasma membrane / RHO GTPases activate IQGAPs / positive regulation of double-strand break repair via homologous recombination / regulation of G1/S transition of mitotic cell cycle / axonogenesis / cytoskeleton organization / Chromatin modifying enzymes / DNA polymerase binding / EPHB-mediated forward signaling Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) / | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.7 Å | |||||||||
Authors | Shuang H / Zihan W | |||||||||
Citation | Journal: Science / Year: 2020Title: Structure of nucleosome-bound human BAF complex. Authors: Shuang He / Zihan Wu / Yuan Tian / Zishuo Yu / Jiali Yu / Xinxin Wang / Jie Li / Bijun Liu / Yanhui Xu / ![]() Abstract: Mammalian SWI/SNF family chromatin remodelers, BRG1/BRM-associated factor (BAF) and polybromo-associated BAF (PBAF), regulate chromatin structure and transcription, and their mutations are linked to ...Mammalian SWI/SNF family chromatin remodelers, BRG1/BRM-associated factor (BAF) and polybromo-associated BAF (PBAF), regulate chromatin structure and transcription, and their mutations are linked to cancers. The 3.7-angstrom-resolution cryo-electron microscopy structure of human BAF bound to the nucleosome reveals that the nucleosome is sandwiched by the base and the adenosine triphosphatase (ATPase) modules, which are bridged by the actin-related protein (ARP) module. The ATPase motor is positioned proximal to nucleosomal DNA and, upon ATP hydrolysis, engages with and pumps DNA along the nucleosome. The C-terminal α helix of SMARCB1, enriched in positively charged residues frequently mutated in cancers, mediates interactions with an acidic patch of the nucleosome. AT-rich interactive domain-containing protein 1A (ARID1A) and the SWI/SNF complex subunit SMARCC serve as a structural core and scaffold in the base module organization, respectively. Our study provides structural insights into subunit organization and nucleosome recognition of human BAF complex. | |||||||||
| History |
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Structure visualization
| Movie |
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_0974.map.gz | 475.5 MB | EMDB map data format | |
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| Header (meta data) | emd-0974-v30.xml emd-0974.xml | 35.8 KB 35.8 KB | Display Display | EMDB header |
| Images | emd_0974.png | 8 KB | ||
| Filedesc metadata | emd-0974.cif.gz | 11.1 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-0974 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-0974 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 6ltjMC ![]() 0968C ![]() 0969C ![]() 0970C ![]() 0971C ![]() 0972C ![]() 0973C ![]() 6lthC C: citing same article ( M: atomic model generated by this map |
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| Similar structure data |
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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_0974.map.gz / Format: CCP4 / Size: 512 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Annotation | Structure of nucleosome-bound human BAF complex in the apo state | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.04 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
+Entire : Structure of nucleosome-bound human BAF complex
+Supramolecule #1: Structure of nucleosome-bound human BAF complex
+Supramolecule #2: Nucleosome
+Supramolecule #3: BAF
+Macromolecule #1: Histone H3.3
+Macromolecule #2: Histone H4
+Macromolecule #3: Histone H2A type 1
+Macromolecule #4: Histone H2B
+Macromolecule #5: Transcription activator BRG1
+Macromolecule #6: Actin-like protein 6A
+Macromolecule #7: Actin, cytoplasmic 1
+Macromolecule #8: AT-rich interactive domain-containing protein 1A
+Macromolecule #9: SWI/SNF-related matrix-associated actin-dependent regulator of ch...
+Macromolecule #10: SWI/SNF complex subunit SMARCC2
+Macromolecule #11: SWI/SNF-related matrix-associated actin-dependent regulator of ch...
+Macromolecule #12: SWI/SNF-related matrix-associated actin-dependent regulator of ch...
+Macromolecule #13: Zinc finger protein ubi-d4
+Macromolecule #14: DNA (119-MER)
+Macromolecule #15: DNA (119-MER)
+Macromolecule #16: ZINC ION
-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: 8 |
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| Grid | Model: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: PLASMA CLEANING / Pretreatment - Time: 60 sec. |
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / 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: OTHER |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
| Startup model | Type of model: OTHER |
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| Final reconstruction | Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.7 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0.8) / Number images used: 320658 |
| Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
| Final angle assignment | Type: MAXIMUM LIKELIHOOD |
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