2ERJ

Crystal structure of the heterotrimeric interleukin-2 receptor in complex with interleukin-2

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.1	295.5	MPEG 550, sodium acetate, sodium citrate, phenol, pH 5.1, VAPOR DIFFUSION, SITTING DROP, temperature 295.5K

Crystal Properties
Matthews coefficient	Solvent content
2.69	54.35

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 57.266	α = 83.85
b = 70.545	β = 82.45
c = 129.236	γ = 89.72

Symmetry
Space Group	P 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	ADSC QUANTUM 315		2004-04-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.1	1.0781	ALS	8.2.1

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	3	129.1	94.4	0.08	7.8	1.9	39459	37249

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3	3.11	75.3		0.5	1.7	1.6	3924

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	PDB structure 2B5I	3	129.1	37863	35379	1864	93.44	0.22254	0.22254	0.22047	0.26288	RANDOM	91.905

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]
-0.2	-1.12	-0.81	0.29	-0.37	0.21

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.888
r_dihedral_angle_3_deg	18.496
r_dihedral_angle_4_deg	13.513
r_dihedral_angle_1_deg	6.446
r_scangle_it	1.659
r_angle_refined_deg	1.269
r_scbond_it	0.93
r_mcangle_it	0.622
r_mcbond_it	0.34
r_nbtor_refined	0.312
r_symmetry_vdw_refined	0.238
r_nbd_refined	0.217
r_xyhbond_nbd_refined	0.142
r_symmetry_hbond_refined	0.108
r_chiral_restr	0.083
r_bond_refined_d	0.009
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	10837
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	350

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
PHASER	phasing