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X-ray Crystal Structure of AmpC S64G Mutant beta-Lactamase in Complex with Substrate and Product Forms of Cephalothin
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1C3B PDB entry 1C3B
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 8.7 296 1.7 M potassium phosphate; the crystal was then soaked in saturated cephalothin in crystallizing buffer for 3 hours, pH 8.7, VAPOR DIFFUSION, HANGING DROP, temperature 296K
Crystal Properties Matthews coefficient Solvent content 2.55 51.79
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 118.619 α = 90 b = 77.153 β = 115.9 c = 98.066 γ = 90
Symmetry Space Group C 1 2 1
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 MARRESEARCH 2000-08-11 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON APS BEAMLINE 5ID-B 1.0 APS 5ID-B
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 1.53 20 90.3 0.066 28.2 3.6 108082 -3
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) 1.53 1.57 95.5 0.4 2.14
Refinement Statistics Diffraction ID Structure Solution Method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) Number Reflections (All) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (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 PDB entry 1C3B 1.53 20 2 108082 89700 2220 0.195 0.2003 0.22 0.2237 Random 54.1656
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] -3.573 -4.646 2.884 0.689
RMS Deviations Key Refinement Restraint Deviation c_scangle_it 3.082 c_scbond_it 2.102 c_mcangle_it 1.835 c_angle_deg 1.7 c_mcbond_it 1.263 c_bond_d 0.014
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 5553 Nucleic Acid Atoms Solvent Atoms 488 Heterogen Atoms 105
Software Software Software Name Purpose DENZO data reduction SCALEPACK data scaling CNS refinement CNS phasing