Experiment: 6AFR

Crystal Structure of the first bromodomain of human BRD4 in complex with 5-((4-fluoro-1H-imidazol-1-yl)methyl)quinolin-8-ol

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.4	289.15	The protein was concentrated to 8-10 mg mL-1 in the buffer containing 20mM HEPES, pH7.4, 100mM NaCl and 1mM DTT. The apo crystals of BRD4_BD1 were harvested by using sitting drop vapor-diffusion method in 4M sodium formate and 15% glycerol at 289.15K. Then the apo crystals were soaked into reservoir solution containing 1mM compound for 7 days.

Crystal Properties
Matthews coefficient	Solvent content
1.97	37.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 31.98	α = 90
b = 47.208	β = 90
c = 78.737	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	80	CCD	Nonius Kappa CCD		2018-07-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRF BEAMLINE BL17U	0.9	SSRF	BL17U

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.998	39.37	99.82	12.44	12.6		8538

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.998	2.069

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	1.998	39.37	1.34	8533	416	99.84	0.2145	0.2116	0.2126	0.2677	0.2658

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
Key	Refinement Restraint Deviation
f_dihedral_angle_d	14.92
f_angle_d	0.911
f_chiral_restr	0.049
f_bond_d	0.007
f_plane_restr	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1047
Nucleic Acid Atoms
Solvent Atoms	68
Heterogen Atoms	18

Software

Software
Software Name	Purpose
PHENIX	refinement