4POK

Crystal structures of thioredoxin with mesna at 2.5A resolution

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	293	20% ethanol, 0.1 M Tris, 60 mg/mL Trx protein, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.22	61.85

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 124.516	α = 90
b = 91.098	β = 108.17
c = 57.676	γ = 90

Symmetry
Space Group	C 1 2 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	MAR scanner 300 mm plate		2010-08-09	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	1.0	APS	22-ID

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	2.5	50	99.5	0.081	13.8	3.4	20751	20751

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	2.51	2.61	99.8		0.538	2.4	3.3	2070

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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	2HXK	2.52	48.29	19666	1062		0.23848	0.23539	0.29575	RANDOM	57.034

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]
0.02		0.02	0.07		-0.08

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.279
r_dihedral_angle_3_deg	20.481
r_dihedral_angle_1_deg	5.256
r_scangle_it	2.409
r_scbond_it	1.379
r_mcangle_it	1.326
r_angle_refined_deg	1.122
r_mcbond_it	0.697
r_chiral_restr	0.073
r_bond_refined_d	0.009

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.279
r_dihedral_angle_3_deg	20.481
r_dihedral_angle_1_deg	5.256
r_scangle_it	2.409
r_scbond_it	1.379
r_mcangle_it	1.326
r_angle_refined_deg	1.122
r_mcbond_it	0.697
r_chiral_restr	0.073
r_bond_refined_d	0.009
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3248
Nucleic Acid Atoms
Solvent Atoms	26
Heterogen Atoms	7

Software

Software
Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	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 R01GM133198.