3BZQ

High resolution crystal structure of Nitrogen Regulatory Protein (Rv2919c) of Mycobacterium tuberculosis

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	290	0.1 M Immidazole, pH 6.5, 1.4 M Sodium acetate, VAPOR DIFFUSION, HANGING DROP, temperature 290K

Crystal Properties
Matthews coefficient	Solvent content
2.39	48.46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 77.149	α = 90
b = 77.149	β = 90
c = 51.84	γ = 120

Symmetry
Space Group	H 3

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	ADSC QUANTUM 315	Rosenbaum-Rock high-resolution double-crystal monochromator	2005-08-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	0.979	APS	19-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.4	40.96	99.08			21338	21338

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 1GNK	1.4	40.96	21338	21338	1131	99.08	0.2085	0.2085	0.20759	0.22566	RANDOM	16.443

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]
-0.5	-0.25		-0.5		0.75

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	27.667
r_dihedral_angle_4_deg	14.392
r_dihedral_angle_3_deg	11.378
r_dihedral_angle_1_deg	5.107
r_scangle_it	2.286
r_scbond_it	1.378
r_angle_refined_deg	1.007
r_mcangle_it	0.92
r_mcbond_it	0.528
r_nbtor_refined	0.294
r_nbd_refined	0.192
r_symmetry_vdw_refined	0.142
r_symmetry_hbond_refined	0.09
r_chiral_restr	0.073
r_xyhbond_nbd_refined	0.063
r_bond_refined_d	0.006
r_gen_planes_refined	0.003
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_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	742
Nucleic Acid Atoms
Solvent Atoms	136
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
ADSC	data collection
HKL-2000	data reduction
HKL-2000	data scaling
AMoRE	phasing