5F61

Crystal structure of the first bromodomain of human BRD4 in complex with MA4-022-1

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.164 
  • R-Value Work: 0.127 

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Literature

Potent Dual BET Bromodomain-Kinase Inhibitors as Value-Added Multitargeted Chemical Probes and Cancer Therapeutics.

Ember, S.W., Lambert, Q.T., Berndt, N., Gunawan, S., Ayaz, M., Tauro, M., Zhu, J.Y., Cranfill, P.J., Greninger, P., Lynch, C.C., Benes, C.H., Lawrence, H.R., Reuther, G.W., Lawrence, N.J., Schonbrunn, E.

(2017) Mol Cancer Ther 16: 1054-1067

  • DOI: 10.1158/1535-7163.MCT-16-0568-T
  • Primary Citation of Related Structures:  
    5F5Z, 5F60, 5F61, 5F62, 5F63

  • PubMed Abstract: 

    • Synergistic action of kinase and BET bromodomain inhibitors in cell killing has been reported for a variety of cancers. Using the chemical scaffold of the JAK2 inhibitor TG101348, we developed and characterized single agents which potently and simultaneously inhibit BRD4 and a specific set of oncogenic tyrosine kinases including JAK2, FLT3, RET, and ROS1 ...

    Synergistic action of kinase and BET bromodomain inhibitors in cell killing has been reported for a variety of cancers. Using the chemical scaffold of the JAK2 inhibitor TG101348, we developed and characterized single agents which potently and simultaneously inhibit BRD4 and a specific set of oncogenic tyrosine kinases including JAK2, FLT3, RET, and ROS1. Lead compounds showed on-target inhibition in several blood cancer cell lines and were highly efficacious at inhibiting the growth of hematopoietic progenitor cells from patients with myeloproliferative neoplasm. Screening across 931 cancer cell lines revealed differential growth inhibitory potential with highest activity against bone and blood cancers and greatly enhanced activity over the single BET inhibitor JQ1. Gene drug sensitivity analyses and drug combination studies indicate synergism of BRD4 and kinase inhibition as a plausible reason for the superior potency in cell killing. Combined, our findings indicate promising potential of these agents as novel chemical probes and cancer therapeutics. Mol Cancer Ther; 16(6); 1054-67. ©2017 AACR .

    Organizational Affiliation: 

    Drug Discovery Department, Moffitt Cancer Center, Tampa, Florida. ernst.schonbrunn@moffitt.org nicholas.lawrence@moffitt.org.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Bromodomain-containing protein 4A, B127Homo sapiensMutation(s): 0 
Gene Names: BRD4, HUNK1
UniProt & NIH Common Fund Data Resources
Find proteins for O60885 (Homo sapiens)
Explore O60885 
Go to UniProtKB:  O60885
PHAROS:  O60885
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO60885
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
5W0
Query on 5W0
Download Ideal Coordinates CCD File 
E [auth A],
M [auth B]		~{N}-[3-[[2-[[3-fluoranyl-4-(4-methylpiperazin-1-yl)phenyl]amino]-5-methyl-pyrimidin-4-yl]amino]phenyl]-2-methyl-propane-2-sulfonamide
C26 H34 F N7 O2 S
OGJFKWUOCYNWAB-UHFFFAOYSA-N		 Ligand Interaction
EDO
Query on EDO
Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
F [auth B],
G [auth B],
H [auth B],
C [auth A],
D [auth A],
F [auth B],
G [auth B],
H [auth B],
I [auth B],
J [auth B],
K [auth B],
L [auth B]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
5W0 Binding MOAD:  5F61 Kd: 35 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.164 
  • R-Value Work: 0.127 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 34.85α = 90
b = 78.51β = 91.74
c = 47.09γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XSCALEdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-02-08
    Type: Initial release
  • Version 1.1: 2017-04-05
    Changes: Database references
  • Version 1.2: 2017-06-14
    Changes: Database references