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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-0968 | |||||||||
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Title | Structure of human BAF Base module | |||||||||
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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 transcription of nucleolar large rRNA by RNA polymerase I / bBAF complex / npBAF complex / nBAF complex / brahma complex / neural retina development / histone H4K16ac reader activity ...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 transcription of nucleolar large rRNA by RNA polymerase I / bBAF complex / npBAF complex / nBAF complex / brahma complex / neural retina development / histone H4K16ac reader activity / negative regulation of androgen receptor signaling pathway / N-acetyltransferase activity / histone H3K14ac reader activity / GBAF complex / blastocyst hatching / EGR2 and SOX10-mediated initiation of Schwann cell myelination / nucleosome array spacer activity / regulation of G0 to G1 transition / hepatocyte differentiation / Tat protein binding / XY body / RSC-type complex / regulation of nucleotide-excision repair / RNA polymerase I preinitiation complex assembly / ATP-dependent chromatin remodeler activity / cellular response to fatty acid / host-mediated activation of viral transcription / nucleosome disassembly / germ cell nucleus / SWI/SNF complex / regulation of mitotic metaphase/anaphase transition / positive regulation of T cell differentiation / nuclear androgen receptor binding / positive regulation of double-strand break repair / nuclear chromosome / 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 / regulation of G1/S transition of mitotic cell cycle / negative regulation of cell differentiation / positive regulation of signal transduction by p53 class mediator / positive regulation of Wnt signaling pathway / positive regulation of myoblast differentiation / ATP-dependent activity, acting on DNA / Chromatin modifying enzymes / DNA polymerase binding / neurogenesis / Interleukin-7 signaling / transcription initiation-coupled chromatin remodeling / nuclear receptor binding / transcription coregulator binding / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / transcription coregulator activity / positive regulation of cell differentiation / apoptotic signaling pathway / Formation of the beta-catenin:TCF transactivating complex / helicase activity / negative regulation of cell growth / DNA integration / kinetochore / positive regulation of miRNA transcription / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / RMTs methylate histone arginines / nuclear matrix / fibrillar center / p53 binding / transcription corepressor activity / nervous system development / positive regulation of cold-induced thermogenesis / histone binding / molecular adaptor activity / transcription coactivator activity / hydrolase activity / chromatin remodeling / signaling receptor binding / negative regulation of cell population proliferation / negative regulation of DNA-templated transcription / intracellular membrane-bounded organelle / positive regulation of cell population proliferation / apoptotic process / centrosome / chromatin binding / regulation of transcription by RNA polymerase II / chromatin / positive regulation of DNA-templated transcription / nucleolus / negative regulation of transcription by RNA polymerase II / positive regulation of transcription by RNA polymerase II / protein-containing complex / extracellular space / DNA binding / RNA binding / zinc ion binding / nucleoplasm / ATP binding / identical protein binding / nucleus / membrane / cytosol Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.0 Å | |||||||||
![]() | Shuang H / Zihan W / Yuan T / Zishuo Y / Jiali Y / Xinxin W / Jie L / Bijun L / Yanhui X | |||||||||
![]() | ![]() 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
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 25.3 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 14.4 KB 14.4 KB | Display Display | ![]() |
Images | ![]() | 5.1 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 291 KB | Display | ![]() |
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Full document | ![]() | 290.6 KB | Display | |
Data in XML | ![]() | 8 KB | Display | |
Data in CIF | ![]() | 9.3 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6lthMC ![]() 0969C ![]() 0970C ![]() 0971C ![]() 0972C ![]() 0973C ![]() 0974C ![]() 6ltjC 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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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 Base module
Entire | Name: Structure of nucleosome-bound human BAF Base module |
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Components |
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-Supramolecule #1: Structure of nucleosome-bound human BAF Base module
Supramolecule | Name: Structure of nucleosome-bound human BAF Base module / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#20 |
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Source (natural) | Organism: ![]() |
Recombinant expression | Organism: ![]() |
-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 |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Specialist optics | Energy filter - Slit width: 20 eV |
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Digitization - Frames/image: 1-32 / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: OTHER |
Sample stage | Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
CTF correction | Software - Name: Gctf (ver. 1.06) |
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Final reconstruction | Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.0 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 2.12.4) / Number images used: 197606 |
Initial angle assignment | Type: OTHER / Software - Name: cryoSPARC (ver. 2.12.4) |
Final angle assignment | Type: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.0.8) |
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: AB INITIO MODEL |
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Output model | ![]() PDB-6lth: |