6UCH

SMARCB1 nucleosome-interacting C-terminal alpha helix


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Recurrent SMARCB1 Mutations Reveal a Nucleosome Acidic Patch Interaction Site That Potentiates mSWI/SNF Complex Chromatin Remodeling.

Valencia, A.M.Collings, C.K.Dao, H.T.St Pierre, R.Cheng, Y.C.Huang, J.Sun, Z.Y.Seo, H.S.Mashtalir, N.Comstock, D.E.Bolonduro, O.Vangos, N.E.Yeoh, Z.C.Dornon, M.K.Hermawan, C.Barrett, L.Dhe-Paganon, S.Woolf, C.J.Muir, T.W.Kadoch, C.

(2019) Cell 179: 1342-1356.e23

  • DOI: 10.1016/j.cell.2019.10.044
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Mammalian switch/sucrose non-fermentable (mSWI/SNF) complexes are multi-component machines that remodel chromatin architecture. Dissection of the subunit- and domain-specific contributions to complex activities is needed to advance mechanistic unders ...

    Mammalian switch/sucrose non-fermentable (mSWI/SNF) complexes are multi-component machines that remodel chromatin architecture. Dissection of the subunit- and domain-specific contributions to complex activities is needed to advance mechanistic understanding. Here, we examine the molecular, structural, and genome-wide regulatory consequences of recurrent, single-residue mutations in the putative coiled-coil C-terminal domain (CTD) of the SMARCB1 (BAF47) subunit, which cause the intellectual disability disorder Coffin-Siris syndrome (CSS), and are recurrently found in cancers. We find that the SMARCB1 CTD contains a basic α helix that binds directly to the nucleosome acidic patch and that all CSS-associated mutations disrupt this binding. Furthermore, these mutations abrogate mSWI/SNF-mediated nucleosome remodeling activity and enhancer DNA accessibility without changes in genome-wide complex localization. Finally, heterozygous CSS-associated SMARCB1 mutations result in dominant gene regulatory and morphologic changes during iPSC-neuronal differentiation. These studies unmask an evolutionarily conserved structural role for the SMARCB1 CTD that is perturbed in human disease.


    Organizational Affiliation

    Department of Pediatric Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA; Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA. Electronic address: cigall_kadoch@dfci.harvard.edu.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily B member 1
A
41Homo sapiensMutation(s): 0 
Gene Names: SMARCB1BAF47INI1SNF5L1
Find proteins for Q12824 (Homo sapiens)
Go to UniProtKB:  Q12824
NIH Common Fund Data Resources
PHAROS  Q12824
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 6UCH Olderado

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Environmental Health Sciences (NIH/NIEHS)United States--

Revision History 

  • Version 1.0: 2019-11-27
    Type: Initial release
  • Version 1.1: 2019-12-04
    Changes: Database references
  • Version 1.2: 2019-12-11
    Changes: Database references