4MEQ

Crystal Structure of the first bromodomain of human BRD4 in complex with a 5-methyl-triazolopyrimidine ligand

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2OSS	pdb entry 2OSS

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	277	0.20M Na2SO4, 20.0% PEG 3350, 10.0% EtGly, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.15	42.85

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 37.55	α = 90
b = 44.28	β = 90
c = 78.18	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	100	IMAGE PLATE	RIGAKU RAXIS IV		2012-03-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU FR-E SUPERBRIGHT	1.52

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (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	1.77	26.89	99.7	0.133	0.133	6.4	4.3	13259	13219			16.8

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.77	1.87	99.4		0.58	0.58	1.3	4	1864

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	pdb entry 2OSS	1.77	26.89	13248	13176	642	99.46	0.1662	0.1633	0.17	0.2234	0.23	RANDOM	16.8735

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]
0.34			-0.18		-0.16

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.81
r_dihedral_angle_4_deg	13.212
r_dihedral_angle_3_deg	12.722
r_dihedral_angle_1_deg	6.203
r_angle_refined_deg	1.659
r_angle_other_deg	1.017
r_chiral_restr	0.11
r_bond_refined_d	0.016
r_gen_planes_refined	0.01
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1059
Nucleic Acid Atoms
Solvent Atoms	192
Heterogen Atoms	21

Software

Software
Software Name	Purpose
SCALA	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
CrystalClear	data collection
MOSFLM	data reduction

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.