2A87

Crystal Structure of M. tuberculosis Thioredoxin reductase

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5	298	15% PEG 3350, Sodium phosphate citrate, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.5	51.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 107.4	α = 90
b = 107.4	β = 90
c = 118.2	γ = 90

Symmetry
Space Group	P 41 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	CCD	MARRESEARCH		2003-10-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ELETTRA BEAMLINE 5.2R	0.927	ELETTRA	5.2R

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	3	50	97	0.081	0.083	16.2	2.2		14186			89

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	3	3.11	97.9		0.369	0.345	14.8	2.1	1368

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	PDB entry 1TDE	3	36	13357	707	97.89	0.21508	0.21132	0.29066	RANDOM	59.802

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]
0.29			0.29		-0.58

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.921
r_dihedral_angle_3_deg	19.761
r_dihedral_angle_4_deg	18.114
r_scangle_it	13.589
r_scbond_it	10.176
r_dihedral_angle_1_deg	6.21
r_mcangle_it	4.221
r_mcbond_it	2.863
r_angle_refined_deg	1.346
r_angle_other_deg	1.013
r_mcbond_other	0.557
r_metal_ion_refined	0.347
r_symmetry_vdw_other	0.23
r_nbd_refined	0.228
r_nbd_other	0.206
r_nbtor_refined	0.184
r_xyhbond_nbd_refined	0.174
r_symmetry_hbond_refined	0.166
r_symmetry_vdw_refined	0.163
r_nbtor_other	0.085
r_chiral_restr	0.081
r_bond_refined_d	0.01
r_gen_planes_refined	0.004
r_bond_other_d	0.003
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4592
Nucleic Acid Atoms
Solvent Atoms	16
Heterogen Atoms	204

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing