2O7G

Crystal structure of the Pribnow Box recognition region of SigC from Mycobacterium tuberculosis

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	298	2M ammonium sulphate, 5% isopropanol, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 298.0K

Crystal Properties
Matthews coefficient	Solvent content
3.4	63.87

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 85.173	α = 90
b = 85.173	β = 90
c = 79.554	γ = 120

Symmetry
Space Group	P 61

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100				2004-12-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.7	35.01	99.8	0.087	10.9	2.6		9076	1	1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.7	2.89	99.2		0.387	2.3	2.3	2612

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	1OR7	2.7	33.46	8656	418	99.98	0.20348	0.2014	0.2479	RANDOM	38.582

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]
0.05	0.02		0.05		-0.07

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.302
r_dihedral_angle_3_deg	24.427
r_dihedral_angle_4_deg	22.87
r_dihedral_angle_1_deg	17.661
r_scangle_it	5.726
r_scbond_it	3.321
r_angle_refined_deg	2.763
r_mcangle_it	1.995
r_mcbond_it	1.106
r_nbtor_refined	0.325
r_chiral_restr	0.263
r_nbd_refined	0.263
r_symmetry_vdw_refined	0.197
r_xyhbond_nbd_refined	0.156
r_bond_refined_d	0.03
r_gen_planes_refined	0.009
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1342
Nucleic Acid Atoms
Solvent Atoms	20
Heterogen Atoms	20

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345	data collection
MOSFLM	data reduction
CCP4	data scaling
PHASER	phasing