2E56

Crystal structure of human MD-2

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.3	277	20% PEG8000, 120mM Na-acetate,70mM Na-cacodylate, pH 6.3, VAPOR DIFFUSION, HANGING DROP, temperature 277.0K

Crystal Properties
Matthews coefficient	Solvent content
2.37	48.07

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.113	α = 90
b = 53.113	β = 90
c = 111.447	γ = 90

Symmetry
Space Group	P 41 21 2

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	RIGAKU JUPITER 210		2006-10-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL38B1	1.0000	SPring-8	BL38B1

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	48.4	99.5	0.105	11.3	12.3		11389			26.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	MIR	THROUGHOUT	2	48.39	3	9641	477	88.74	0.19648	0.19407	0.24922	RANDOM	39.557

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]
0.81			0.81		-1.61

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.988
r_dihedral_angle_3_deg	15.402
r_dihedral_angle_4_deg	14.207
r_scangle_it	7.736
r_dihedral_angle_1_deg	6.146
r_mcangle_it	5.947
r_scbond_it	5.345
r_mcbond_it	4.099
r_angle_refined_deg	1.543
r_nbtor_refined	0.338
r_symmetry_vdw_refined	0.315
r_nbd_refined	0.279
r_symmetry_hbond_refined	0.248
r_xyhbond_nbd_refined	0.246
r_chiral_restr	0.117
r_bond_refined_d	0.01
r_gen_planes_refined	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1162
Nucleic Acid Atoms
Solvent Atoms	143
Heterogen Atoms	76

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling
SHARP	phasing