4RFB

1.93 Angstrom Crystal Structure of Superantigen-like Protein from Staphylococcus aureus in Complex with Sialyl-Lewis X.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	295	Protein: 7.4mG/mL, 0.25M Sodium chloride, 0.01M Tris-HCl (pH 8.3); Screen: PEGsII (F12), 0.8M Lithium chloride, 0.1M Tris (pH 8.5), 32% (w/v) PEG 4000, VAPOR DIFFUSION, SITTING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
1.88	34.71

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.64	α = 90
b = 108.199	β = 90
c = 167.655	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	Mirrors	2014-03-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-D	0.97875	APS	21-ID-D

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	1.93	30	99.7	0.074	0.074	19.3	4.9	61498	61498		-3	26.2

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	1.93	1.96	100		0.552	0.552	3	4.9	3076

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	3V05	1.93	28.83	56257	56257	2997	99.68	0.17106	0.17106	0.16855	0.21829	RANDOM	34.297

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]
-1.26			0.26		0.99

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	28.512
r_dihedral_angle_4_deg	12.867
r_dihedral_angle_3_deg	10.993
r_long_range_B_refined	6.855
r_long_range_B_other	6.79
r_scangle_other	4.541
r_dihedral_angle_1_deg	3.714
r_scbond_it	2.895
r_scbond_other	2.895
r_mcangle_it	2.697
r_mcangle_other	2.697
r_mcbond_it	1.849
r_mcbond_other	1.849
r_angle_refined_deg	1.637
r_angle_other_deg	0.722
r_chiral_restr	0.099
r_bond_refined_d	0.011
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6405
Nucleic Acid Atoms
Solvent Atoms	471
Heterogen Atoms	265

Software

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