Experiment: 1EU3

CRYSTAL STRUCTURE OF THE SUPERANTIGEN SMEZ-2 (ZINC BOUND) FROM STREPTOCOCCUS PYOGENES

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.7	291	PEG 5000 MME, cacodylate, sodium phosphate, Zinc acetate, pH 5.7, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.29	46.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 148.23	α = 90
b = 39.96	β = 134.05
c = 104.07	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	110	IMAGE PLATE	MARRESEARCH		1999-02-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH3R

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	1.68	40	98.5	0.038	38.1	5.5	275416	275416		-3	16.1

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)
	1.68	1.74	94.7		0.231		3.8	4742

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION		THROUGHOUT	1.68	37.05	93448	9123	95.4	0.207	0.207	0.2192	0.23	RANDOM	17.5

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]
0.75		1.32	-0.41		-0.34

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	25.1
c_scangle_it	1.41
c_angle_deg	1.4
c_mcangle_it	1.15
c_scbond_it	0.92
c_improper_angle_d	0.7
c_mcbond_it	0.67
c_bond_d	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3416
Nucleic Acid Atoms
Solvent Atoms	416
Heterogen Atoms	18

Software

Software
Software Name	Purpose
AMoRE	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling