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Crystal Structure of imidazolonepropionase complexed with imidazole-4-acetic acid sodium salt, a substrate homologue
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2BB0 PDB ENTRY 2BB0
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION 7.5 289 20%(w/v) PEG4000, 0.1M Tris-HCl pH7.5, 0.05M Imidazoli-4-acetic acid sodium salt, 2%(w/v) benzamidine hydrochloride, VAPOR DIFFUSION, temperature 289K
Crystal Properties Matthews coefficient Solvent content 2.22 44.52
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 57.53 α = 90 b = 106.08 β = 90.2 c = 66.31 γ = 90
Symmetry Space Group P 1 21 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 2005-01-12 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON BSRF BEAMLINE 3W1A 1.0 BSRF 3W1A
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 50 98.9 0.067 10.7 53567 52978 7.7
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 2.03 97.3 0.31 2.7
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 (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 2BB0 2 19.91 53663 50914 2060 94.8 0.19 0.187 0.185 0.1863 0.216 0.2157 RANDOM 16
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] -0.45 1.28 2.23 -1.78
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 23 c_angle_deg 1.3 c_improper_angle_d 0.7 c_bond_d 0.005
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 6312 Nucleic Acid Atoms Solvent Atoms 405 Heterogen Atoms 20
Software Software Software Name Purpose CNS refinement MAR345 data collection SCALEPACK data scaling CNS phasing