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SURPRISING LEADS FOR A CHOLERA TOXIN RECEPTOR BINDING ANTAGONIST; CRYSTALLOGRAPHIC STUDIES OF CTB MUTANTS
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 6.4 pH 6.4
Crystal Properties Matthews coefficient Solvent content 2.2 44.19
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 102.6 α = 90 b = 67.39 β = 131.63 c = 98.81 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 AREA DETECTOR SIEMENS X1000 1994-11-01 M
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1
Refinement Statistics Diffraction ID Structure Solution Method Resolution (High) Resolution (Low) Cut-off Sigma (F) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) Mean Isotropic B X-RAY DIFFRACTION 2.1 12 3 22154 75.5 0.208 0.2211 41.7
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_angle_deg 1.81 x_bond_d 0.014 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
RMS Deviations Key Refinement Restraint Deviation x_angle_deg 1.81 x_bond_d 0.014 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 x_dihedral_angle_d_na x_dihedral_angle_d_prot x_improper_angle_d x_improper_angle_d_na x_improper_angle_d_prot x_mcbond_it x_mcangle_it x_scbond_it x_scangle_it
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 4010 Nucleic Acid Atoms Solvent Atoms 105 Heterogen Atoms
Software Software Software Name Purpose XENGEN data collection X-PLOR model building X-PLOR refinement XENGEN data reduction X-PLOR phasing