3KOR

Crystal structure of a putative Trp repressor from Staphylococcus aureus

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	295	25% PEG3350, 0.2M sodium chloride, 0.1M HEPES pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
1.94	36.48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.973	α = 90
b = 68.461	β = 96.86
c = 73.17	γ = 90

Symmetry
Space Group	P 1 21 1

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 210	Si(111) double-crystal monochromator	2009-02-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 17-BM	0.97960	APS	17-BM

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	1.6	50	99.7	0.098	9.1	7.2		55538

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.6	1.64	96.3		0.357		5	3557

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	1.6	26.7	55412	2813	99.7	0.192	0.191	0.221	RANDOM	22.046

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
r_dihedral_angle_2_deg	34.724
r_dihedral_angle_4_deg	13.198
r_dihedral_angle_3_deg	12.407
r_dihedral_angle_1_deg	4.978
r_scangle_it	3.888
r_scbond_it	2.37
r_mcangle_it	1.406
r_angle_refined_deg	1.209
r_mcbond_it	0.754
r_chiral_restr	0.082
r_bond_refined_d	0.011
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3204
Nucleic Acid Atoms
Solvent Atoms	315
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SHARP	phasing
DM	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
JDirector	data collection
HKL-2000	data reduction
HKL-2000	data scaling