4FLP

Crystal Structure of the first bromodomain of human BRDT in complex with the inhibitor JQ1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.23 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.211 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Small-Molecule Inhibition of BRDT for Male Contraception.

Matzuk, M.M.McKeown, M.R.Filippakopoulos, P.Li, Q.Ma, L.Agno, J.E.Lemieux, M.E.Picaud, S.Yu, R.N.Qi, J.Knapp, S.Bradner, J.E.

(2012) Cell 150: 673-684

  • DOI: 10.1016/j.cell.2012.06.045

  • PubMed Abstract: 
  • A pharmacologic approach to male contraception remains a longstanding challenge in medicine. Toward this objective, we explored the spermatogenic effects of a selective small-molecule inhibitor (JQ1) of the bromodomain and extraterminal (BET) subfami ...

    A pharmacologic approach to male contraception remains a longstanding challenge in medicine. Toward this objective, we explored the spermatogenic effects of a selective small-molecule inhibitor (JQ1) of the bromodomain and extraterminal (BET) subfamily of epigenetic reader proteins. Here, we report potent inhibition of the testis-specific member BRDT, which is essential for chromatin remodeling during spermatogenesis. Biochemical and crystallographic studies confirm that occupancy of the BRDT acetyl-lysine binding pocket by JQ1 prevents recognition of acetylated histone H4. Treatment of mice with JQ1 reduced seminiferous tubule area, testis size, and spermatozoa number and motility without affecting hormone levels. Although JQ1-treated males mate normally, inhibitory effects of JQ1 evident at the spermatocyte and round spermatid stages cause a complete and reversible contraceptive effect. These data establish a new contraceptive that can cross the blood:testis boundary and inhibit bromodomain activity during spermatogenesis, providing a lead compound targeting the male germ cell for contraception.


    Organizational Affiliation

    Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX 77030, USA. mmatzuk@bcm.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Bromodomain testis-specific protein
A, B
119Homo sapiensMutation(s): 0 
Gene Names: BRDT
Find proteins for Q58F21 (Homo sapiens)
Go to Gene View: BRDT
Go to UniProtKB:  Q58F21
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
K
Query on K

Download SDF File 
Download CCD File 
B
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
JQ1
Query on JQ1

Download SDF File 
Download CCD File 
A, B
(6S)-6-(2-tert-butoxy-2-oxoethyl)-4-(4-chlorophenyl)-2,3,9-trimethyl-6,7-dihydrothieno[3,2-f][1,2,4]triazolo[4,3-a][1,4]diazepin-10-ium
C23 H26 Cl N4 O2 S
DNVXATUJJDPFDM-KRWDZBQOSA-O
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
JQ1Kd: 190 nM BINDINGMOAD
JQ1Kd: 190 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.23 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.211 
  • Space Group: P 21 2 21
Unit Cell:
Length (Å)Angle (°)
a = 37.400α = 90.00
b = 57.420β = 90.00
c = 128.690γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
REFMACrefinement
DNAdata collection
MOSFLMdata reduction
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-07-11
    Type: Initial release
  • Version 1.1: 2012-08-29
    Type: Database references