6YQN

Crystal structure of the first bromodomain of human BRD4 in complex with the dual inhibitor TW9


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 3MXF 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP277Protein solution: 10 mg/ml in 10 mM HEPES, pH 7.5, 150 mM NaCl, 0.5 mM TCEP, and 5% glycerol. 50 mM stock solution of TW12 in DMSO added to give a final inhibitor concentration 1.5 mM. Reservoir buffer: 24% PEG 3350, 0.1 M sodium formate, 15% ethylene glycol and 0.1 M bis-Tris-propane pH 7.3. Ratio protein/reservoir solution = 2:1
Crystal Properties
Matthews coefficientSolvent content
2.1442.53

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 37.254α = 90
b = 44.338β = 90
c = 78.256γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS3 6M2017-11-30MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONESRF BEAMLINE ID30B0.70848ESRFID30B

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)CC (Half)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
11.0578.31000.0840.99814.311.6613709.65991112921
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.051.070.690.8962.8

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONFOURIER SYNTHESISFREE R-VALUE3MXF1.0539.151.3373747750361260309599.93963815520.1648050618650.1641999753760.17622499927514.181153913
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d10.8622616378
f_angle_d0.82195939178
f_chiral_restr0.0741496552007
f_plane_restr0.00545915163667
f_bond_d0.00497251855873
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1019
Nucleic Acid Atoms
Solvent Atoms147
Heterogen Atoms35

Software

Software
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHENIXphasing