3GG3

Crystal Structure of the Bromodomain of Human PCAF

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.2	277	20% PEG10K, 4% Ethylene Glycol, 0.1M HEPES pH 8.2, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.38	63.61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 99.226	α = 90
b = 99.226	β = 90
c = 101.137	γ = 120

Symmetry
Space Group	H 3

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		2008-07-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU FR-E SUPERBRIGHT	1.5

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	2.25	32.743	100	0.048	0.048	12.5	2.8	17604	17604

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	2.25	2.37	100		0.456	0.456	2	2.8	2567

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	PDB entries 2NXB, 2OO1, 2OSS, 2OUO, 2RFJ, 3DAI	2.25	32.74	17610	17594	892	99.91	0.209	0.209	0.207	0.245	RANDOM	31.265

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]
-0.66	-0.33		-0.66		1

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.425
r_dihedral_angle_4_deg	22.367
r_dihedral_angle_3_deg	14.16
r_scangle_it	11.709
r_scbond_it	9.302
r_dihedral_angle_1_deg	5.605
r_mcangle_it	5.521
r_mcbond_it	3.906
r_angle_refined_deg	1.42
r_mcbond_other	1.25
r_angle_other_deg	0.903
r_chiral_restr	0.083
r_bond_refined_d	0.015
r_gen_planes_refined	0.007
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1728
Nucleic Acid Atoms
Solvent Atoms	120
Heterogen Atoms	1

Software

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