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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 | |||||||||
![]() | Structure of nucleosome-bound human BAF complex in the apo state | |||||||||
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![]() | Chromatin remodeler / Complex / GENE REGULATION | |||||||||
Function / homology | ![]() negative regulation of myeloid progenitor cell differentiation / single stranded viral RNA replication via double stranded DNA intermediate / positive regulation of glucose mediated signaling pathway / positive regulation of norepinephrine uptake / regulation of DNA strand elongation / positive regulation of telomere maintenance in response to DNA damage / positive regulation of transcription of nucleolar large rRNA by RNA polymerase I / cellular response to cytochalasin B / bBAF complex / npBAF complex ...negative regulation of myeloid progenitor cell differentiation / single stranded viral RNA replication via double stranded DNA intermediate / positive regulation of glucose mediated signaling pathway / positive regulation of norepinephrine uptake / regulation of DNA strand elongation / positive regulation of telomere maintenance in response to DNA damage / positive regulation of transcription of nucleolar large rRNA by RNA polymerase I / cellular response to cytochalasin B / bBAF complex / npBAF complex / nBAF complex / brahma complex / regulation of transepithelial transport / neural retina development / histone H4K16ac reader activity / morphogenesis of a polarized epithelium / negative regulation of androgen receptor signaling pathway / structural constituent of postsynaptic actin cytoskeleton / N-acetyltransferase activity / histone H3K14ac reader activity / GBAF complex / Formation of annular gap junctions / blastocyst hatching / Formation of the dystrophin-glycoprotein complex (DGC) / protein localization to adherens junction / EGR2 and SOX10-mediated initiation of Schwann cell myelination / nucleosome array spacer activity / Gap junction degradation / regulation of G0 to G1 transition / Folding of actin by CCT/TriC / dense body / Cell-extracellular matrix interactions / postsynaptic actin cytoskeleton / hepatocyte differentiation / Tat protein binding / XY body / Prefoldin mediated transfer of substrate to CCT/TriC / RSC-type complex / Ino80 complex / blastocyst formation / regulation of nucleotide-excision repair / RNA polymerase I preinitiation complex assembly / regulation of double-strand break repair / ATP-dependent chromatin remodeler activity / adherens junction assembly / RHOF GTPase cycle / cellular response to fatty acid / Adherens junctions interactions / host-mediated activation of viral transcription / apical protein localization / nucleosome disassembly / Sensory processing of sound by outer hair cells of the cochlea / tight junction / germ cell nucleus / Interaction between L1 and Ankyrins / SWI/SNF complex / regulation of mitotic metaphase/anaphase transition / Sensory processing of sound by inner hair cells of the cochlea / positive regulation of T cell differentiation / regulation of norepinephrine uptake / apical junction complex / nuclear androgen receptor binding / transporter regulator activity / positive regulation of double-strand break repair / nuclear chromosome / spinal cord development / maintenance of blood-brain barrier / nitric-oxide synthase binding / establishment or maintenance of cell polarity / cortical cytoskeleton / NuA4 histone acetyltransferase complex / regulation of chromosome organization / positive regulation of stem cell population maintenance / RUNX1 interacts with co-factors whose precise effect on RUNX1 targets is not known / Regulation of MITF-M-dependent genes involved in pigmentation / Recycling pathway of L1 / brush border / regulation of G1/S transition of mitotic cell cycle / regulation of DNA replication / kinesin binding / regulation of embryonic development / EPH-ephrin mediated repulsion of cells / negative regulation of cell differentiation / positive regulation of signal transduction by p53 class mediator / regulation of synaptic vesicle endocytosis / RHO GTPases Activate WASPs and WAVEs / positive regulation of Wnt signaling pathway / positive regulation of myoblast differentiation / ATP-dependent activity, acting on DNA / RHO GTPases activate IQGAPs / regulation of protein localization to plasma membrane / positive regulation of double-strand break repair via homologous recombination / regulation of DNA repair / Chromatin modifying enzymes / DNA polymerase binding / neurogenesis / cytoskeleton organization / EPHB-mediated forward signaling / substantia nigra development / telomere maintenance Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.7 Å | |||||||||
![]() | Shuang H / Zihan W | |||||||||
![]() | ![]() Title: 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
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 475.5 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 35.8 KB 35.8 KB | Display Display | ![]() |
Images | ![]() | 8 KB | ||
Filedesc metadata | ![]() | 11.1 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 662.5 KB | Display | ![]() |
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Full document | ![]() | 662.1 KB | Display | |
Data in XML | ![]() | 7.9 KB | Display | |
Data in CIF | ![]() | 9.1 KB | Display | |
Arichive directory | ![]() ![]() | 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 | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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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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![]() | 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: ![]() |
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 |