5ULA

Crystal Structure of the First Bromodomain of Human BRD4 in Complex With Cyclic Vinylogous Amide Inhibitor MS402


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.134 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

BET N-terminal bromodomain inhibition selectively blocks Th17 cell differentiation and ameliorates colitis in mice.

Cheung, K.Lu, G.Sharma, R.Vincek, A.Zhang, R.Plotnikov, A.N.Zhang, F.Zhang, Q.Ju, Y.Hu, Y.Zhao, L.Han, X.Meslamani, J.Xu, F.Jaganathan, A.Shen, T.Zhu, H.Rusinova, E.Zeng, L.Zhou, J.Yang, J.Peng, L.Ohlmeyer, M.Walsh, M.J.Zhang, D.Y.Xiong, H.Zhou, M.M.

(2017) Proc. Natl. Acad. Sci. U.S.A. 114: 2952-2957

  • DOI: 10.1073/pnas.1615601114

  • PubMed Abstract: 
  • T-helper 17 (Th17) cells have important functions in adaptor immunity and have also been implicated in inflammatory disorders. The bromodomain and extraterminal domain (BET) family proteins regulate gene transcription during lineage-specific differen ...

    T-helper 17 (Th17) cells have important functions in adaptor immunity and have also been implicated in inflammatory disorders. The bromodomain and extraterminal domain (BET) family proteins regulate gene transcription during lineage-specific differentiation of naïve CD4+ T cells to produce mature T-helper cells. Inhibition of acetyl-lysine binding of the BET proteins by pan-BET bromodomain (BrD) inhibitors, such as JQ1, broadly affects differentiation of Th17, Th1, and Th2 cells that have distinct immune functions, thus limiting their therapeutic potential. Whether these BET proteins represent viable new epigenetic drug targets for inflammatory disorders has remained an unanswered question. In this study, we report that selective inhibition of the first bromodomain of BET proteins with our newly designed small molecule MS402 inhibits primarily Th17 cell differentiation with a little or almost no effect on Th1 or Th2 and Treg cells. MS402 preferentially renders Brd4 binding to Th17 signature gene loci over those of housekeeping genes and reduces Brd4 recruitment of p-TEFb to phosphorylate and activate RNA polymerase II for transcription elongation. We further show that MS402 prevents and ameliorates T-cell transfer-induced colitis in mice by blocking Th17 cell overdevelopment. Thus, selective pharmacological modulation of individual bromodomains likely represents a strategy for treatment of inflammatory bowel diseases.


    Organizational Affiliation

    Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Bromodomain-containing protein 4
A, B
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 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
5MJ
Query on 5MJ

Download SDF File 
Download CCD File 
A, B
3-chloranyl-~{N}-(4-methoxyphenyl)-4-[(2-methyl-3-oxidanylidene-cyclopenten-1-yl)amino]benzamide
C20 H19 Cl N2 O3
VZTVTSICPINUNG-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
5MJKi: 77 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.134 
  • Space Group: P 32
Unit Cell:
Length (Å)Angle (°)
a = 47.660α = 90.00
b = 47.660β = 90.00
c = 124.210γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data reduction
REFMACrefinement
BALBESphasing
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-03-22
    Type: Initial release