4A9L

N-TERMINAL BROMODOMAIN OF HUMAN BRD4 WITH 1,3-DIMETHYL-6-(MORPHOLINE- 4-SULFONYL)-1,2,3,4-TETRAHYDROQUINAZOLIN-2-ONE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Fragment-Based Discovery of Bromodomain Inhibitors Part 1: Inhibitor Binding Modes and Implications for Lead Discovery.

Chung, C.W.Dean, A.W.Woolven, J.M.Bamborough, P.

(2012) J Med Chem 55: 576

  • DOI: 10.1021/jm201320w
  • Primary Citation of Related Structures:  
    4A9E, 4A9F, 4A9H, 4A9I, 4A9J, 4A9K, 4A9L

  • PubMed Abstract: 
  • Bromodomain-containing proteins are key epigenetic regulators of gene transcription and readers of the histone code. However, the therapeutic benefits of modulating this target class are largely unexplored due to the lack of suitable chemical probes. ...

    Bromodomain-containing proteins are key epigenetic regulators of gene transcription and readers of the histone code. However, the therapeutic benefits of modulating this target class are largely unexplored due to the lack of suitable chemical probes. This article describes the generation of lead molecules for the BET bromodomains through screening a fragment set chosen using structural insights and computational approaches. Analysis of 40 BRD2/fragment X-ray complexes highlights both shared and disparate interaction features that may be exploited for affinity and selectivity. Six representative crystal structures are then exemplified in detail. Two of the fragments are completely new bromodomain chemotypes, and three have never before been crystallized in a bromodomain, so our results significantly extend the limited public knowledge-base of crystallographic small molecule/bromodomain interactions. Certain fragments (including paracetamol) bind in a consistent mode to different bromodomains such as CREBBP, suggesting their potential to act as generic bromodomain templates. An important implication is that the bromodomains are not only a phylogenetic family but also a system in which chemical and structural knowledge of one bromodomain gives insights transferrable to others.


    Organizational Affiliation

    Computational & Structural Chemistry, Molecular Discovery Research, GlaxoSmithKline R&D, Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, UK. Chun-wa.chung@gsk.com



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
BROMODOMAIN-CONTAINING PROTEIN 4A127Homo sapiensMutation(s): 0 
Gene Names: BRD4HUNK1
Find proteins for O60885 (Homo sapiens)
Explore O60885 
Go to UniProtKB:  O60885
NIH Common Fund Data Resources
PHAROS  O60885
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
P9L
Query on P9L

Download CCD File 
A
1,3-dimethyl-6-(morpholin-4-ylsulfonyl)-3,4-dihydroquinazolin-2(1H)-one
C14 H19 N3 O4 S
LFBDSGLXLXJATE-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

Download CCD File 
A
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
NO3
Query on NO3

Download CCD File 
A
NITRATE ION
N O3
NHNBFGGVMKEFGY-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
P9LIC50:  30000   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 37.594α = 90
b = 42.899β = 90
c = 79.41γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-01-11
    Type: Initial release
  • Version 1.1: 2012-02-08
    Changes: Other