5MLI image
Entry Detail
PDB ID:
5MLI
Keywords:
TRANSCRIPTION
Title:
N-TERMINAL BROMODOMAIN OF HUMAN BRD4 WITH 4-chloro-2-methyl-5-(methylamino)pyridazin-3(2H)-one
Biological Source:
Source Organism:
Homo sapiens
Host Organism:
Escherichia coli
PDB Version:
Deposition Date:
2016-12-06
Release Date:
2017-12-20
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.63 Å
R-Value Free:
0.19
R-Value Work:
0.15
R-Value Observed:
0.15
Space Group:
P 21 21 21
5MLI validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:Bromodomain-containing protein 4
Chain IDs:A
Chain Length:127
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:O60885 Pfam ID:PF00439
Ligand Molecules
82I
Primary Citation
Discovery of a Potent, Cell Penetrant, and Selective p300/CBP-Associated Factor (PCAF)/General Control Nonderepressible 5 (GCN5) Bromodomain Chemical Probe.
J. Med. Chem. 60 695 709 (2017)
PMID: 28002667 DOI: 10.1021/acs.jmedchem.6b01566

Abstact

p300/CREB binding protein associated factor (PCAF/KAT2B) and general control nonderepressible 5 (GCN5/KAT2A) are multidomain proteins that have been implicated in retroviral infection, inflammation pathways, and cancer development. However, outside of viral replication, little is known about the dependence of these effects on the C-terminal bromodomain. Herein, we report GSK4027 as a chemical probe for the PCAF/GCN5 bromodomain, together with GSK4028 as an enantiomeric negative control. The probe was optimized from a weakly potent, nonselective pyridazinone hit to deliver high potency for the PCAF/GCN5 bromodomain, high solubility, cellular target engagement, and ≥18000-fold selectivity over the BET family, together with ≥70-fold selectivity over the wider bromodomain families.

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Primary Citation of related structures
5MLI