1NBP

Crystal Structure Of Human Interleukin-2 Y31C Covalently Modified At C31 With 3-Mercapto-1-(1,3,4,9-tetrahydro-B-carbolin-2-yl)-propan-1-one

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1M4A	PDB ENTRY 1M4A

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	298	ammonium sulfate, PEG 8k, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.19	43.34

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.16	α = 90
b = 85.35	β = 90
c = 31.71	γ = 90

Symmetry
Space Group	P 21 21 2

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	2001-08-17	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	2.2	20	98.2	0.069	0.069	17.5	3.1		7096			33

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)
	2.2	2.28	96.9		0.253	0.253	5.5	3.1	715

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 ENTRY 1M4A	2.2	10	7042	6660	342	98.22	0.23034	0.23034	0.22799	0.27734	RANDOM	28.507

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]
-1.03			1.1		-0.06

RMS Deviations
Key	Refinement Restraint Deviation
r_scangle_it	4.315
r_dihedral_angle_1_deg	3.987
r_mcangle_it	3.407
r_scbond_it	3.061
r_mcbond_it	2.224
r_angle_refined_deg	1.191
r_nbd_refined	0.165
r_symmetry_vdw_refined	0.154
r_xyhbond_nbd_refined	0.094
r_chiral_restr	0.058
r_symmetry_hbond_refined	0.043
r_bond_refined_d	0.006
r_gen_planes_refined	0.002
r_bond_other_d
r_angle_other_deg
r_dihedral_angle_2_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	985
Nucleic Acid Atoms
Solvent Atoms	49
Heterogen Atoms	23

Software

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