1M4A

Crystal Structure of Human Interleukin-2 Y31C Covalently Modified at C31 with (1H-Indol-3-yl)-(2-mercapto-ethoxyimino)-acetic acid

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	298	pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
1.99	38.06

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 31.15	α = 90
b = 47.59	β = 104.84
c = 42.63	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	IMAGE PLATE	RIGAKU RAXIS IV	mirrors	2000-06-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.18	10	91.7	0.099	0.099	16.1	3.3	5840	5840			32.4

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.18	2.26	67.6		0.246	0.246	3.2	2	438

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	2.18	10	5210	5210	561	91.65	0.27625	0.27625	0.27124	0.32364	RANDOM	43.652

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]
-3.47		0.28	-0.76		4.37

RMS Deviations
Key	Refinement Restraint Deviation
r_mcangle_it	4
r_dihedral_angle_1_deg	3.628
r_scangle_it	3.429
r_mcbond_it	2.358
r_scbond_it	2.117
r_angle_refined_deg	1.366
r_symmetry_hbond_refined	0.346
r_nbd_refined	0.266
r_xyhbond_nbd_refined	0.236
r_symmetry_vdw_refined	0.233

RMS Deviations
Key	Refinement Restraint Deviation
r_mcangle_it	4
r_dihedral_angle_1_deg	3.628
r_scangle_it	3.429
r_mcbond_it	2.358
r_scbond_it	2.117
r_angle_refined_deg	1.366
r_symmetry_hbond_refined	0.346
r_nbd_refined	0.266
r_xyhbond_nbd_refined	0.236
r_symmetry_vdw_refined	0.233
r_chiral_restr	0.095
r_bond_refined_d	0.008
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	935
Nucleic Acid Atoms
Solvent Atoms	13
Heterogen Atoms	24

Software

Software
Software Name	Purpose
d*TREK	data reduction
AMoRE	phasing
REFMAC	refinement
d*TREK	data scaling

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.