5GJK

Crystal Structure of BAF47 and BAF155 Complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 

Starting Models: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural Insights into BAF47 and BAF155 Complex Formation.

Yan, L.Xie, S.Du, Y.Qian, C.

(2017) J Mol Biol 429: 1650-1660

  • DOI: https://doi.org/10.1016/j.jmb.2017.04.008
  • Primary Citation of Related Structures:  
    5GJK

  • PubMed Abstract: 

    Mammalian BAF complexes are a subfamily of SWI/SNF ATP-dependent chromatin remodelers that dynamically modulate chromatin structure to regulate fundamental cellular processes including gene transcription, cell cycle control, and DNA damage response. So far, many distinct BAF complexes have been identified with polymorphic assemblies of up to 15 subunits from 29 genes. The evolutionarily conserved BRG1/BRM, BAF47, and BAF155/BAF170 form a stable complex that carries out essential chromatin remodeling activity and therefore have been regarded as the core components of BAF complex. Here, we first confirmed that SWIRM domain of BAF155 is responsible for its interaction with BAF47 and then narrowed down the SWIRM-binding region in BAF47 to the Repeat 1 (RPT1) domain. We further presented the high-resolution crystal structure of SWIRM/RPT1 complex. Extensive mutagenesis experiments together with isothermal titration calorimetry and NMR titrations were performed to corroborate the interactions observed in crystal structure. Overall, we demonstrated that BAF155 SWIRM is a modular domain involved in BAF47 interaction, which is functionally distinct from other characterized SWIRM domains that possess DNA binding activity.


  • Organizational Affiliation

    School of Biomedical Sciences, The University of Hong Kong, Hong Kong SAR, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
SWI/SNF complex subunit SMARCC194Homo sapiensMutation(s): 0 
Gene Names: SMARCC1BAF155
UniProt & NIH Common Fund Data Resources
Find proteins for Q92922 (Homo sapiens)
Explore Q92922 
Go to UniProtKB:  Q92922
PHAROS:  Q92922
GTEx:  ENSG00000173473 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ92922
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily B member 168Homo sapiensMutation(s): 0 
Gene Names: SMARCB1BAF47INI1SNF5L1
UniProt & NIH Common Fund Data Resources
Find proteins for Q12824 (Homo sapiens)
Explore Q12824 
Go to UniProtKB:  Q12824
PHAROS:  Q12824
GTEx:  ENSG00000099956 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ12824
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 
  • Space Group: P 62 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.518α = 90
b = 80.518β = 90
c = 200.952γ = 120
Software Package:
Software NamePurpose
HKL-2000data scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
PHENIXphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Research Grant Council, General Research FundHong Kong17127715
Research Grant Council, General Research FundHong Kong775712

Revision History  (Full details and data files)

  • Version 1.0: 2017-06-07
    Type: Initial release
  • Version 1.1: 2023-11-08
    Changes: Data collection, Database references, Refinement description