3L5W

Crystal structure of the complex between IL-13 and C836 FAB

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5	293	0.1 M HEPES PH 7.5, 20% PEG 3350, 0.2 M SODIUM TARTRATE; CRYO CONDITIONS: MOTHER LIQUOR + 18% GLYCEROL, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.35	48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 76.62	α = 90
b = 65.56	β = 107.02
c = 118.74	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	RIGAKU SATURN 944	VARIMAX HF	2008-03-31	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF

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	20	99.7	0.083	9.7	5.6		76032		-3	38.3

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)
	2	2.07	98.6		0.415	2.4	3.3

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1Q9Q	2	15	72036	72036	3812	94.7	0.208	0.205	0.253	RANDOM	49.5

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]
-0.14		0.29	0.32		-0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.034
r_scangle_it	27.965
r_scbond_it	24.615
r_dihedral_angle_4_deg	22.228
r_dihedral_angle_3_deg	16.92
r_dihedral_angle_1_deg	6.75
r_mcangle_it	5.248
r_mcbond_it	3.598
r_angle_refined_deg	1.424
r_nbtor_refined	0.299
r_nbd_refined	0.206
r_symmetry_vdw_refined	0.201
r_symmetry_hbond_refined	0.188
r_xyhbond_nbd_refined	0.141
r_chiral_restr	0.097
r_bond_refined_d	0.011
r_bond_other_d
r_angle_other_deg
r_gen_planes_refined
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	8073
Nucleic Acid Atoms
Solvent Atoms	426
Heterogen Atoms	6

Software

Software
Software Name	Purpose
CrystalClear	data collection
MOLREP	phasing
REFMAC	refinement
d*TREK	data reduction
d*TREK	data scaling