3R2T

2.2 Angstrom Resolution Crystal Structure of Superantigen-like Protein from Staphylococcus aureus subsp. aureus NCTC 8325.

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		295	Protein: 7.5mG/mL. 0.5M Sodium chloride, 0.01M Tris, pH 8.3. Screen: Classics II, G5, 0.2M Lithium Sulfate, 0.1M Tris, pH 8.5, 25% (w/v) PEG 3350 , VAPOR DIFFUSION, SITTING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2	38.52

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 51.701	α = 90
b = 72.314	β = 90
c = 123.96	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	CCD	MARMOSAIC 300 mm CCD	Beryllium lenses	2011-03-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-G	0.97856	APS	21-ID-G

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	2.2	30	99.9	0.076	19.6	6	24026	24026		-3	42.1

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)
	2.2	2.24	100		0.501	3.8	6.1	1190

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 entry 3KLS	2.21	29.63	22746	22746	1229	99.58	0.20753	0.20753	0.20518	0.2521	RANDOM	52.599

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]
4.15			-1.28		-2.87

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.008
r_dihedral_angle_4_deg	13.492
r_dihedral_angle_3_deg	9.203
r_scangle_it	4.613
r_scbond_it	2.921
r_dihedral_angle_1_deg	2.391
r_mcangle_it	1.877
r_angle_refined_deg	1.569
r_mcbond_it	1.032
r_angle_other_deg	0.821

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.008
r_dihedral_angle_4_deg	13.492
r_dihedral_angle_3_deg	9.203
r_scangle_it	4.613
r_scbond_it	2.921
r_dihedral_angle_1_deg	2.391
r_mcangle_it	1.877
r_angle_refined_deg	1.569
r_mcbond_it	1.032
r_angle_other_deg	0.821
r_mcbond_other	0.268
r_chiral_restr	0.105
r_bond_refined_d	0.012
r_gen_planes_refined	0.004
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3210
Nucleic Acid Atoms
Solvent Atoms	144
Heterogen Atoms	10

Software

Software
Software Name	Purpose
Blu-Ice	data collection
BALBES	phasing
REFMAC	refinement
HKL-3000	data reduction
HKL-3000	data scaling

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 R01GM133198.