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Crystal Structure of a Histidyl-tRNA synthetase from Acinetobacter baumannii with bound L-Histidine and ATP
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1KMM
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 290 AcbaC.00063.a.B1.PW37682 at 19.5 mg/ml incubated with 3 mM L-Histidine, ATP, and MgCl2, then then mixed 1:1 with MCSG1(e3): 50mM MgCl2, 0.1M Hepes, pH=7.5, 30% PEG-MME550, cryoprotected with 20% ethylene glycol
Crystal Properties Matthews coefficient Solvent content 2.85 56.82
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 88.81 α = 90 b = 103.07 β = 90 c = 246.3 γ = 90
Symmetry Space Group I 2 2 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 MARMOSAIC 225 mm CCD Beryllium Lenses 2015-04-21 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON APS BEAMLINE 21-ID-F 0.97872 APS 21-ID-F
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) Rrim I (All) 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 2.2 50 99.9 0.077 0.084 15.55 6.1 57675 -3 33.7
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) Rrim I (All) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.2 2.26 100 0.533 0.58 3.79 6.3
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) 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) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE 1KMM 2.2 47.54 1.35 57669 2000 99.9 0.1661 0.1647 0.1672 0.2054 0.2072 41.3577
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]
RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 15.801 f_angle_d 0.91 f_chiral_restr 0.05 f_bond_d 0.007 f_plane_restr 0.005
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 6031 Nucleic Acid Atoms Solvent Atoms 460 Heterogen Atoms 86
Software Software Software Name Purpose XSCALE data scaling PHENIX refinement PDB_EXTRACT data extraction XDS data reduction BALBES phasing