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ALPHA-TOXIN FROM CLOSTRIDIUM PERFRINGENS
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model Other Incompletely traced model of C. perfringens a-toxin, strain NCTC8237
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 7.5 pH 7.5
Crystal Properties Matthews coefficient Solvent content 2.5 50
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 61.3 α = 90 b = 177.3 β = 90 c = 79.1 γ = 90
Symmetry Space Group C 2 2 21
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 295 IMAGE PLATE MAR scanner 300 mm plate MIRRORS 1995-08-18 M
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SRS BEAMLINE PX9.5 SRS PX9.5
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 1.9 40 87.5 0.065 13.5 5.26 30175 -3 32.8
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 1.9 1.96 73.8 0.157 4.3
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 SIR, MOLECULAR REPLACEMENT AND CROSS-CRYSTAL AVERAGING USED THROUGHOUT REFINEMENT INCOMPLETE EARLIER CHAIN TRACE OF ALTERNATE STRAIN 1.9 25 30150 1636 87.5 0.208 0.208 0.1955 0.254 0.2427 RANDOM 29.2
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 23.26 x_angle_deg 2.117 x_improper_angle_d 1.625 x_mcbond_it 0.788 x_scbond_it 0.788 x_mcangle_it 0.762 x_scangle_it 0.762 x_bond_d 0.012 x_bond_d_na x_bond_d_prot
RMS Deviations Key Refinement Restraint Deviation x_dihedral_angle_d 23.26 x_angle_deg 2.117 x_improper_angle_d 1.625 x_mcbond_it 0.788 x_scbond_it 0.788 x_mcangle_it 0.762 x_scangle_it 0.762 x_bond_d 0.012 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 3009 Nucleic Acid Atoms Solvent Atoms 173 Heterogen Atoms 13
Software Software Software Name Purpose X-PLOR model building X-PLOR refinement DENZO data reduction SCALEPACK data scaling X-PLOR phasing