4QB3

Crystal structure of the first bromodomain of human BRD4 in complex with Olinone

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.94 Å
  • R-Value Free: 0.155 
  • R-Value Work: 0.136 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history. 

Literature

Selective chemical modulation of gene transcription favors oligodendrocyte lineage progression.

Gacias, M., Gerona-Navarro, G., Plotnikov, A.N., Zhang, G., Zeng, L., Kaur, J., Moy, G., Rusinova, E., Rodriguez, Y., Matikainen, B., Vincek, A., Joshua, J., Casaccia, P., Zhou, M.M.

(2014) Chem.Biol. 21: 841-854

  • DOI: 10.1016/j.chembiol.2014.05.009

  • PubMed Abstract: 

    • Lysine acetylation regulates gene expression through modulating protein-protein interactions in chromatin. Chemical inhibition of acetyl-lysine binding bromodomains of the major chromatin regulators BET (bromodomain and extraterminal domain) proteins ...

    Lysine acetylation regulates gene expression through modulating protein-protein interactions in chromatin. Chemical inhibition of acetyl-lysine binding bromodomains of the major chromatin regulators BET (bromodomain and extraterminal domain) proteins has been shown to effectively block cell proliferation in cancer and inflammation. However, whether selective inhibition of individual BET bromodomains has distinctive functional consequences remains only partially understood. In this study, we show that selective chemical inhibition of the first bromodomain of BET proteins using our small-molecule inhibitor, Olinone, accelerated the progression of mouse primary oligodendrocyte progenitors toward differentiation, whereas inhibition of both bromodomains of BET proteins hindered differentiation. This effect was target specific, as it was not detected in cells treated with inactive analogs and independent of any effect on proliferation. Therefore, selective chemical modulation of individual bromodomains, rather than use of broad-based inhibitors, may enhance regenerative strategies in disorders characterized by myelin loss such as aging and neurodegeneration.

    Organizational Affiliation: 

    Departments of Neuroscience, and Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Bromodomain-containing protein 4
A
127Homo sapiensMutation(s): 0 
Gene Names: BRD4 (HUNK1)
Find proteins for O60885 (Homo sapiens)
Go to Gene View: BRD4
Go to UniProtKB:  O60885
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EDO
Query on EDO
Download SDF File 
Download CCD File 
A
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
30M
Query on 30M
Download SDF File 
Download CCD File 
A
N-[4-(1-oxo-1,2,3,4-tetrahydro-5H-pyrido[4,3-b]indol-5-yl)butyl]acetamide
C17 H21 N3 O2
RYVLOOXFFIFQEN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.94 Å
  • R-Value Free: 0.155 
  • R-Value Work: 0.136 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 36.943α = 90.00
b = 44.126β = 90.00
c = 78.455γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-04-22
    Type: Initial release