6BGG

Solution NMR structures of the BRD3 ET domain in complex with a CHD4 peptide


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • 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

The BRD3 ET domain recognizes a short peptide motif through a mechanism that is conserved across chromatin remodelers and transcriptional regulators.

Wai, D.C.C.Szyszka, T.N.Campbell, A.E.Kwong, C.Wilkinson-White, L.E.Silva, A.P.G.Low, J.K.K.Kwan, A.H.Gamsjaeger, R.Chalmers, J.D.Patrick, W.M.Lu, B.Vakoc, C.R.Blobel, G.A.Mackay, J.P.

(2018) J. Biol. Chem. 293: 7160-7175

  • DOI: 10.1074/jbc.RA117.000678

  • PubMed Abstract: 
  • Members of the bromodomain and extra-terminal domain (BET) family of proteins (bromodomain-containing (BRD) 2, 3, 4 and T) are widely expressed and highly conserved regulators of gene expression in eukaryotes. These proteins have been intimately link ...

    Members of the bromodomain and extra-terminal domain (BET) family of proteins (bromodomain-containing (BRD) 2, 3, 4 and T) are widely expressed and highly conserved regulators of gene expression in eukaryotes. These proteins have been intimately linked to human disease and more than a dozen clinical trials are currently underway to test BET-protein inhibitors as modulators of cancer therapies. However, although it is clear that these proteins use their bromodomains to bind both histones and transcription factors bearing acetylated lysine residues, the molecular mechanisms by which BET-family proteins regulate gene expression are not well defined. In particular, the functions of the other domains such as the ET domain have been less extensively studied. Here, we examine the properties of the ET domain of BRD3 as a protein-protein interaction module. Using a combination of pulldown and biophysical assays, we demonstrate that BRD3 binds to a range of chromatin-remodeling complexes, including the NuRD, BAF and INO80 complexes, via a short linear 'KIKL' motif in one of the complex subunits. NMR-based structural analysis revealed that, surprisingly, this mode of interaction is shared by the AF9 and ENL transcriptional coregulators that contain an acetyllysine-binding YEATS domain and regulate transcriptional elongation. This observation establishes a functional commonality between these two families of cancer-related transcriptional regulators. In summary, our data provide insight into the mechanisms by which BET-family proteins might link chromatin acetylation to transcriptional outcomes and uncover an unexpected functional similarity between BET and YEATS family proteins.


    Organizational Affiliation

    University of Sydney, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CHD4
A
12Homo sapiensMutation(s): 0 
Gene Names: CHD4
EC: 3.6.4.12
Find proteins for Q14839 (Homo sapiens)
Go to Gene View: CHD4
Go to UniProtKB:  Q14839
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Bromodomain-containing protein 3
B
93Homo sapiensMutation(s): 0 
Gene Names: BRD3 (KIAA0043, RING3L)
Find proteins for Q15059 (Homo sapiens)
Go to Gene View: BRD3
Go to UniProtKB:  Q15059
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Health and Medical Research Council (Australia)Australia--

Revision History 

  • Version 1.0: 2018-03-21
    Type: Initial release
  • Version 1.1: 2018-04-04
    Type: Data collection, Database references
  • Version 1.2: 2018-05-23
    Type: Data collection, Database references