ISDA

Entry Detail

PDB ID:

5MLJ

Keywords:

TRANSCRIPTION

Title:

Bromodomain of Human GCN5 with 4-bromo-2-methyl-5-(((3R,5R)-1-methyl-5-phenylpiperidin-3-yl)amino)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:

1.80 Å

R-Value Free:

0.21

R-Value Work:

0.16

R-Value Observed:

0.16

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Histone acetyltransferase KAT2A
Chain IDs:A, B
Chain Length:112
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:Q92830 Pfam ID:PF00439 EC:2.3.1.48

Ligand Molecules

9ST

EDO

Primary Citation

Discovery of a Potent, Cell Penetrant, and Selective p300/CBP-Associated Factor (PCAF)/General Control Nonderepressible 5 (GCN5) Bromodomain Chemical Probe.

Humphreys, P.G, Bamborough, P, Chung, C.W, Craggs, P.D, Gordon, L, Grandi, P, Hayhow, T.G, Hussain, J, Jones, K.L, Lindon, M, Michon, A.M, Renaux, J.F, Suckling, C.J, Tough, D.F, Prinjha, R.K.Show

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