4GAI

Crystal structure of EBI-005, a chimera of human IL-1beta and IL-1Ra

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	298	25% PEG 3350, 200 mM MgCl2, 100 mM HEPES, pH 7.5, 0.5% w/v n-Dodecy- -D-maltoside (DDM), VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.21	44.46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 43.392	α = 90
b = 66.91	β = 90
c = 216.266	γ = 90

Symmetry
Space Group	C 2 2 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	RAYONIX MX-300		2011-08-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CLSI BEAMLINE 08ID-1	0.9795	CLSI	08ID-1

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	1.49	50	99.8	0.06	12	5.7	294637	51907	1	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	1.49	1.54	99.4		0.582		5.2	5089

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	MOLECULAR REPLACEMENT	THROUGHOUT	1.49	50	51814	2638	99.62	0.1888	0.1872	0.2194	RANDOM	28.475

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]
-0.38			1.6		-1.22

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.947
r_dihedral_angle_4_deg	14.209
r_dihedral_angle_3_deg	14.029
r_dihedral_angle_1_deg	6.81
r_scangle_it	4.928
r_scbond_it	3.055
r_mcangle_it	1.99
r_angle_refined_deg	1.342
r_mcbond_it	1.211
r_chiral_restr	0.258
r_bond_refined_d	0.02
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2385
Nucleic Acid Atoms
Solvent Atoms	354
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction