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Crystal structure of Mycobacterium Tuberculosis Glutamine Synthetase in complex with a purine analogue inhibitor.
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1HTO PDB ENTRY 1HTO
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 5 294 EQUAL VOLUMES OF MOTHER LIQUOR (0.1 M SODIUM ACETATE, PH 5, 0.75 M 1,6-HEXANEDIOL) AND PROTEIN SOLUTION (10 G/L IN 0.020 M TRIS-HCL. PH 7.5, 0.15 M SODIUM CHLORIDE, 0.005 M MAGNESIUM CHLORIDE, 2%(V/V) DMSO, 0.0002 M INHIBITOR), VAPOR DIFFUSION, HANGING-DROP, TEMPERATURE 294K.
Crystal Properties Matthews coefficient Solvent content 2.43 49
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 134.95 α = 90 b = 203.18 β = 90 c = 230.2 γ = 90
Symmetry Space Group P 21 21 21
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 CCD 2007-05-12 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE ID14-2 ESRF ID14-2
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 2.55 29.9 97.6 0.09 12.3 4.2 200628 45
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 2.55 2.65 95.6 0.45 3.8 4.2
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 (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB ENTRY 1HTO 2.55 29.95 194667 10318 99.76 0.23098 0.2302 0.2289 0.24586 0.2447 RANDOM 41.987
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] -0.6 1.62 -1.02
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 35.479 r_dihedral_angle_3_deg 15.359 r_dihedral_angle_4_deg 11.838 r_dihedral_angle_1_deg 5.628 r_scangle_it 2.054 r_mcangle_it 1.229 r_scbond_it 1.223 r_angle_refined_deg 1.22 r_mcbond_it 0.684 r_symmetry_hbond_refined 0.515
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 35.479 r_dihedral_angle_3_deg 15.359 r_dihedral_angle_4_deg 11.838 r_dihedral_angle_1_deg 5.628 r_scangle_it 2.054 r_mcangle_it 1.229 r_scbond_it 1.223 r_angle_refined_deg 1.22 r_mcbond_it 0.684 r_symmetry_hbond_refined 0.515 r_symmetry_vdw_refined 0.319 r_nbtor_refined 0.31 r_nbd_refined 0.205 r_xyhbond_nbd_refined 0.123 r_chiral_restr 0.085 r_bond_refined_d 0.01 r_gen_planes_refined 0.004 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_mcangle_other r_scbond_other r_scangle_other r_long_range_B_refined r_long_range_B_other r_rigid_bond_restr r_sphericity_free r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 43920 Nucleic Acid Atoms Solvent Atoms 1536 Heterogen Atoms 348
Software Software Software Name Purpose REFMAC refinement XDS data reduction XSCALE data scaling MOLREP phasing