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- PDB-9wbz: The structure of NCP-motor-ARP module of ncBAF-nucleosome complex -

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Basic information

Entry
Database: PDB / ID: 9wbz
TitleThe structure of NCP-motor-ARP module of ncBAF-nucleosome complex
Components
  • (DNA (207-MER)) x 2
  • Actin, cytoplasmic 1
  • Actin-like protein 6A
  • B-cell CLL/lymphoma 7 protein family member A
  • Histone H2A
  • Histone H2B 1.1
  • Histone H3.2
  • Histone H4
  • Isoform 2 of SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily A member 4
KeywordsGENE REGULATION/DNA / Chromatin remodeling complex / GENE REGULATION-DNA complex
Function / homology
Function and homology information


positive regulation of glucose mediated signaling pathway / regulation of DNA strand elongation / positive regulation of telomere maintenance in response to DNA damage / positive regulation of norepinephrine uptake / Regulation of CDH1 Function / Formation of the polybromo-BAF (pBAF) complex / Formation of the non-canonical BAF (ncBAF) complex / Formation of the canonical BAF (cBAF) complex / Formation of the embryonic stem cell BAF (esBAF) complex / Formation of neuronal progenitor and neuronal BAF (npBAF and nBAF) ...positive regulation of glucose mediated signaling pathway / regulation of DNA strand elongation / positive regulation of telomere maintenance in response to DNA damage / positive regulation of norepinephrine uptake / Regulation of CDH1 Function / Formation of the polybromo-BAF (pBAF) complex / Formation of the non-canonical BAF (ncBAF) complex / Formation of the canonical BAF (cBAF) complex / Formation of the embryonic stem cell BAF (esBAF) complex / Formation of neuronal progenitor and neuronal BAF (npBAF and nBAF) / positive regulation of transcription of nucleolar large rRNA by RNA polymerase I / bBAF complex / cellular response to cytochalasin B / neural retina development / npBAF complex / negative regulation of androgen receptor signaling pathway / nBAF complex / brahma complex / neuron projection arborization / EGR2 and SOX10-mediated initiation of Schwann cell myelination / regulation of transepithelial transport / nucleosome array spacer activity / morphogenesis of a polarized epithelium / Formation of annular gap junctions / Formation of the dystrophin-glycoprotein complex (DGC) / structural constituent of postsynaptic actin cytoskeleton / GBAF complex / Gap junction degradation / Folding of actin by CCT/TriC / regulation of G0 to G1 transition / Cell-extracellular matrix interactions / protein localization to adherens junction / dense body / Tat protein binding / postsynaptic actin cytoskeleton / RNA polymerase I preinitiation complex assembly / Ino80 complex / Prefoldin mediated transfer of substrate to CCT/TriC / RSC-type complex / blastocyst formation / host-mediated activation of viral transcription / ATP-dependent chromatin remodeler activity / regulation of double-strand break repair / regulation of nucleotide-excision repair / Adherens junctions interactions / RHOF GTPase cycle / nucleosome disassembly / adherens junction assembly / apical protein localization / Sensory processing of sound by inner hair cells of the cochlea / Sensory processing of sound by outer hair cells of the cochlea / Interaction between L1 and Ankyrins / tight junction / SWI/SNF complex / regulation of mitotic metaphase/anaphase transition / positive regulation of T cell differentiation / nuclear androgen receptor binding / apical junction complex / positive regulation of double-strand break repair / spinal cord development / maintenance of blood-brain barrier / regulation of norepinephrine uptake / regulation of chromosome organization / nitric-oxide synthase binding / transporter regulator activity / cortical cytoskeleton / positive regulation of stem cell population maintenance / establishment or maintenance of cell polarity / NuA4 histone acetyltransferase complex / motor behavior / RUNX1 interacts with co-factors whose precise effect on RUNX1 targets is not known / Recycling pathway of L1 / Regulation of MITF-M-dependent genes involved in pigmentation / regulation of DNA replication / brush border / regulation of G1/S transition of mitotic cell cycle / regulation of embryonic development / EPH-ephrin mediated repulsion of cells / negative regulation of cell differentiation / kinesin binding / RHO GTPases Activate WASPs and WAVEs / regulation of synaptic vesicle endocytosis / positive regulation of myoblast differentiation / positive regulation of signal transduction by p53 class mediator / ATP-dependent activity, acting on DNA / positive regulation of Wnt signaling pathway / RHO GTPases activate IQGAPs / regulation of DNA repair / regulation of protein localization to plasma membrane / positive regulation of double-strand break repair via homologous recombination / Chromatin modifying enzymes / DNA polymerase binding / EPHB-mediated forward signaling / cytoskeleton organization / substantia nigra development / transcription initiation-coupled chromatin remodeling / axonogenesis / Interleukin-7 signaling / telomere maintenance / calyx of Held
Similarity search - Function
BCL7 / BCL7, N-terminal conserver region / SWI/SNF complex subunit BRG1 / BRK domain / BRK domain / BRK domain superfamily / domain in transcription and CHROMO domain helicases / Glutamine-Leucine-Glutamine, QLQ / QLQ / QLQ domain profile. ...BCL7 / BCL7, N-terminal conserver region / SWI/SNF complex subunit BRG1 / BRK domain / BRK domain / BRK domain superfamily / domain in transcription and CHROMO domain helicases / Glutamine-Leucine-Glutamine, QLQ / QLQ / QLQ domain profile. / QLQ / Snf2-ATP coupling, chromatin remodelling complex / Snf2, ATP coupling domain / Snf2-ATP coupling, chromatin remodelling complex / domain in helicases and associated with SANT domains / HSA domain / Helicase/SANT-associated domain / HSA domain profile. / : / SNF2-like, N-terminal domain superfamily / SNF2, N-terminal / SNF2-related domain / Actins signature 1. / Actin, conserved site / Actins signature 2. / Actin/actin-like conserved site / Actins and actin-related proteins signature. / Actin / Actin family / Actin / : / Histone H2A conserved site / Histone H2A signature. / Histone H2B signature. / Histone H2B / Histone H2B / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone 2A / Histone H2A / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / CENP-T/Histone H4, histone fold / Centromere kinetochore component CENP-T histone fold / Helicase conserved C-terminal domain / Histone H3 signature 1. / Histone H3 signature 2. / ATPase, nucleotide binding domain / Histone H3 / Histone H3/CENP-A / Bromodomain, conserved site / Bromodomain signature. / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 domain / Bromodomain / bromo domain / Bromodomain / Bromodomain (BrD) profile. / Bromodomain-like superfamily / Histone-fold / helicase superfamily c-terminal domain / Superfamilies 1 and 2 helicase C-terminal domain profile. / Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile. / DEAD-like helicases superfamily / Helicase, C-terminal / Helicase superfamily 1/2, ATP-binding domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
DNA / DNA (> 10) / DNA (> 100) / Actin-like protein 6A / Histone H2B 1.1 / SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily A member 4 / Actin, cytoplasmic 1 / Histone H4 / Histone H3.2 / B-cell CLL/lymphoma 7 protein family member A / Histone H2A
Similarity search - Component
Biological speciesHomo sapiens (human)
Xenopus laevis (African clawed frog)
unidentified (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.9 Å
AuthorsChen, K.J. / Chen, Z.C.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32130016 China
CitationJournal: Cell Discov / Year: 2025
Title: ncBAF recognizes the nucleosome through BCL7A in chromatin remodeling.
Authors: Kangjing Chen / Liwen Du / Yumin Liu / Mo Chen / Zhucheng Chen /
History
DepositionAug 15, 2025Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Feb 18, 2026Provider: repository / Type: Initial release
Revision 1.0Feb 18, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Feb 18, 2026Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Feb 18, 2026Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Feb 18, 2026Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Feb 18, 2026Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Feb 18, 2026Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Isoform 2 of SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily A member 4
B: Histone H4
C: Histone H2A
D: Histone H2B 1.1
E: Histone H3.2
F: Histone H4
G: Histone H2A
H: Histone H2B 1.1
I: DNA (207-MER)
J: DNA (207-MER)
K: Histone H3.2
L: Actin, cytoplasmic 1
N: Actin-like protein 6A
O: B-cell CLL/lymphoma 7 protein family member A


Theoretical massNumber of molelcules
Total (without water)530,34314
Polymers530,34314
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 8 types, 12 molecules ABFCGDHEKLNO

#1: Protein Isoform 2 of SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily A member 4 / SMARCA4 / BRG1-associated factor 190A / BAF190A / Mitotic growth and transcription activator / ...SMARCA4 / BRG1-associated factor 190A / BAF190A / Mitotic growth and transcription activator / Protein BRG-1 / Protein brahma homolog 1 / SNF2-beta / Transcription activator BRG1


Mass: 181622.281 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SMARCA4, BAF190A, BRG1, SNF2B, SNF2L4 / Production host: Homo sapiens (human)
References: UniProt: P51532, Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement
#2: Protein Histone H4


Mass: 11263.231 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P62799
#3: Protein Histone H2A


Mass: 13978.241 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Gene: LOC494591, h2ac14.L, hist1h2aj, hist1h2aj.L / Production host: Escherichia coli (E. coli) / References: UniProt: Q6AZJ8
#4: Protein Histone H2B 1.1 / H2B1.1


Mass: 13834.070 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P02281
#5: Protein Histone H3.2


Mass: 15303.930 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P84233
#8: Protein Actin, cytoplasmic 1 / Beta-actin


Mass: 41782.660 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ACTB / Production host: Homo sapiens (human)
References: UniProt: P60709, Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement
#9: Protein Actin-like protein 6A / 53 kDa BRG1-associated factor A / Actin-related protein Baf53a / ArpNbeta / BRG1-associated factor ...53 kDa BRG1-associated factor A / Actin-related protein Baf53a / ArpNbeta / BRG1-associated factor 53A / BAF53A / INO80 complex subunit K


Mass: 47509.812 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ACTL6A, BAF53, BAF53A, INO80K / Production host: Homo sapiens (human) / References: UniProt: O96019
#10: Protein B-cell CLL/lymphoma 7 protein family member A


Mass: 22842.938 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: BCL7A / Production host: Homo sapiens (human) / References: UniProt: Q4VC05

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DNA chain , 2 types, 2 molecules IJ

#6: DNA chain DNA (207-MER)


Mass: 63553.496 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) unidentified (others)
#7: DNA chain DNA (207-MER)


Mass: 64272.871 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) unidentified (others)

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Details

Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: NCP-motor-ARP of ncBAF / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
21Homo sapiens (human)9606
31Xenopus laevis (African clawed frog)8355
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
21Homo sapiens (human)9606
31Escherichia coli (E. coli)562
Buffer solutionpH: 8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1800 nm / Nominal defocus min: 1400 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM software
IDNameVersionCategory
1RELIONparticle selection
2PHENIX1.19.2_4158:model refinement
13cryoSPARC3D reconstruction
CTF correctionType: NONE
3D reconstructionResolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 175820 / Symmetry type: POINT

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