3QT2

Structure of a cytokine ligand-receptor complex

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	294	10% (w/v) PEG 20000, 0.1M MOPS pH 6.5, 20% (w/v) glucose, 2.5% MPD, VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
2.92	57.93

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 85.084	α = 90
b = 61.633	β = 99.49
c = 142.113	γ = 90

Symmetry
Space Group	P 1 21 1

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 225 mm CCD		2006-06-28	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X10SA	0.9079, 0.9795, 0.9797	SLS	X10SA

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.55	140.03	99.9	0.06	8.2	2.53	91896	91854	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	2.55	2.64	100		0.445	1.9	2.53	8715

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2.55	42.02	91854	2424	99.9	0.21025	0.21025	0.20723	0.26442	RANDOM	80.658

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]
-2.34		0.44	4.74		-2.26

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.164
r_dihedral_angle_3_deg	24.078
r_dihedral_angle_4_deg	18.656
r_dihedral_angle_1_deg	7.341
r_scangle_it	4.127
r_scbond_it	2.646
r_mcangle_it	1.833
r_angle_refined_deg	1.628
r_mcbond_it	1.066
r_symmetry_vdw_refined	0.359
r_nbtor_refined	0.343
r_nbd_refined	0.297
r_xyhbond_nbd_refined	0.223
r_symmetry_hbond_refined	0.143
r_chiral_restr	0.124
r_bond_refined_d	0.019
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8446
Nucleic Acid Atoms
Solvent Atoms	55
Heterogen Atoms	80

Software

Software
Software Name	Purpose
SHARP	phasing
REFMAC	refinement
CrystalClear	data reduction
CrystalClear	data scaling