2OQR

The structure of the response regulator RegX3 from Mycobacterium tuberculosis

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	294	0.2 M Calcium Acetate, 2-4% PEG 4000, 0.1 M Sodium Cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
3.45	64.38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 124.351	α = 90
b = 124.351	β = 90
c = 44.824	γ = 90

Symmetry
Space Group	P 4 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	MAR CCD 165 mm		2005-02-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X11	0.813	EMBL/DESY, HAMBURG	X11

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	2.03	19.97	99.9	0.076	0.076	32	12.1	23225	23179	-3	-3	42

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	2.03	2.06	97.7		0.664	0.664	4	8.5	1112

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	SAD	THROUGHOUT	2.03	19.97	23225	21964	1188	99.87	0.179	0.179	0.177	0.217	RANDOM	40.019

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]
-0.03			-0.03		0.07

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.649
r_dihedral_angle_4_deg	19.926
r_dihedral_angle_3_deg	17.145
r_dihedral_angle_1_deg	10.934
r_scangle_it	6.355
r_scbond_it	4.168
r_mcangle_it	1.557
r_angle_refined_deg	1.548
r_angle_other_deg	1.069
r_mcbond_it	1
r_symmetry_metal_ion_refined	0.354
r_symmetry_vdw_refined	0.299
r_symmetry_vdw_other	0.265
r_nbd_refined	0.243
r_nbd_other	0.199
r_symmetry_hbond_refined	0.177
r_nbtor_refined	0.175
r_xyhbond_nbd_refined	0.175
r_mcbond_other	0.174
r_metal_ion_refined	0.171
r_chiral_restr	0.09
r_nbtor_other	0.088
r_bond_refined_d	0.016
r_bond_other_d	0.008
r_gen_planes_refined	0.006
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1734
Nucleic Acid Atoms
Solvent Atoms	163
Heterogen Atoms	17

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
Auto-Rickshaw	phasing