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X-RAY CRYSTAL STRUCTURE OF AMINOIMIDAZOLE RIBONUCLEOTIDE SYNTHETASE (PURM), FROM THE E. COLI PURINE BIOSYNTHETIC PATHWAY, AT 2.5 A RESOLUTION
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 5.6 pH 5.6
Crystal Properties Matthews coefficient Solvent content 2.4 47.5
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 71.17 α = 90 b = 211.68 β = 90 c = 94.45 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 170 CCD ADSC MIRRORS 1998-02-02 M MAD
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON CHESS BEAMLINE F2 0.9792,0.9790,0.9638 CHESS F2
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 2.5 20 91.4 4.7 8.8 4.2 44742 2 35.7
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 2.5 2.64 93 14.3 5.1 4.1
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Resolution (High) Resolution (Low) Cut-off Sigma (F) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Work (Depositor) R-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MAD THROUGHOUT 2.5 20 2 43410 2610 86.6 0.192 0.264 RANDOM 16.6
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 x_dihedral_angle_d 25 x_scangle_it 1.58 x_angle_deg 1.4 x_improper_angle_d 1.25 x_mcangle_it 1.19 x_scbond_it 0.97 x_mcbond_it 0.68 x_bond_d 0.009 x_bond_d_na x_bond_d_prot
RMS Deviations Key Refinement Restraint Deviation x_dihedral_angle_d 25 x_scangle_it 1.58 x_angle_deg 1.4 x_improper_angle_d 1.25 x_mcangle_it 1.19 x_scbond_it 0.97 x_mcbond_it 0.68 x_bond_d 0.009 x_bond_d_na x_bond_d_prot x_angle_d x_angle_d_na x_angle_d_prot x_angle_deg_na x_angle_deg_prot x_dihedral_angle_d_na x_dihedral_angle_d_prot x_improper_angle_d_na x_improper_angle_d_prot
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 9990 Nucleic Acid Atoms Solvent Atoms 503 Heterogen Atoms 20
Software Software Software Name Purpose SnB phasing X-PLOR refinement MOSFLM data reduction CCP4 data scaling