3K2J

Crystal Structure of the 3rd Bromodomain of Human Poly-bromodomain containing protein 1 (PB1)

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2NXB	Ensemble of 2NXB, 2OO1, 2OSS, 2OUO, 2RFJ, 3DAI, 3D7C, 3DWY
experimental model	PDB	2OO1	Ensemble of 2NXB, 2OO1, 2OSS, 2OUO, 2RFJ, 3DAI, 3D7C, 3DWY
experimental model	PDB	2OSS	Ensemble of 2NXB, 2OO1, 2OSS, 2OUO, 2RFJ, 3DAI, 3D7C, 3DWY
experimental model	PDB	2OUO	Ensemble of 2NXB, 2OO1, 2OSS, 2OUO, 2RFJ, 3DAI, 3D7C, 3DWY
experimental model	PDB	2RFJ	Ensemble of 2NXB, 2OO1, 2OSS, 2OUO, 2RFJ, 3DAI, 3D7C, 3DWY
experimental model	PDB	3DAI	Ensemble of 2NXB, 2OO1, 2OSS, 2OUO, 2RFJ, 3DAI, 3D7C, 3DWY
experimental model	PDB	3D7C	Ensemble of 2NXB, 2OO1, 2OSS, 2OUO, 2RFJ, 3DAI, 3D7C, 3DWY
experimental model	PDB	3DWY	Ensemble of 2NXB, 2OO1, 2OSS, 2OUO, 2RFJ, 3DAI, 3D7C, 3DWY

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.5	277	0.1M NaOAc.3H20 pH 5.5, 1.1M (NH4)2SO4, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.43	49.43

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 81.39	α = 90
b = 81.39	β = 90
c = 79.475	γ = 120

Symmetry
Space Group	P 65

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 315r		2009-07-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I02	0.9795	Diamond	I02

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	2.2	36.221	100	0.074	0.074	14.4	8	15266	15266			50.8

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	2.2	2.32	100		0.744	0.744	2	4.3	2231

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	Ensemble of 2NXB, 2OO1, 2OSS, 2OUO, 2RFJ, 3DAI, 3D7C, 3DWY	2.2	36.22	15252	15238	744	99.91	0.227	0.227	0.224	0.27	RANDOM	33.606

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]
1.74	0.87		1.74		-2.61

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	43.303
r_dihedral_angle_3_deg	17.828
r_dihedral_angle_4_deg	14.163
r_scangle_it	6.463
r_dihedral_angle_1_deg	6.042
r_scbond_it	6.027
r_mcangle_it	3.826
r_mcbond_it	3.105
r_mcbond_other	2.051
r_angle_refined_deg	1.459
r_angle_other_deg	0.94
r_chiral_restr	0.094
r_bond_refined_d	0.016
r_gen_planes_refined	0.007
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1891
Nucleic Acid Atoms
Solvent Atoms	54
Heterogen Atoms	12

Software

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