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THE STRUCTURE OF PHOSPHOSERINE AMINOTRANSFERASE FROM E. COLI IN COMPLEX WITH ALPHA-METHYL-L-GLUTAMATE
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 277 PSAT HAS BEEN CRYSTALLIZED AT 4-7 DEGREES CELSIUS BY THE HANGING DROP METHOD, USING PEG4000 AS A PRECIPITANT, BUFFERED WITH SODIUM ACETATE TO PH 7.2 IN THE DROP AND PH 5.6 IN THE RESERVOIR. THE PH-GRADIENT WAS ESSENTIAL FOR THE CRYSTALLIZATION., vapor diffusion - hanging drop, temperature 277K
Crystal Properties Matthews coefficient Solvent content 2.7 52
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 68.86 α = 90 b = 94.45 β = 90 c = 131.81 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 277 DIFFRACTOMETER ENRAF-NONIUS FAST 1991-07-26 M
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE ELLIOTT GX-20
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 2.8 39.8 91.8 0.094 9.8 2.7 19908 45.4
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 2.8 2.95 68.4 0.402 2.8 1.8
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method 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 DIFFERENCE FOURIER THROUGHOUT 2.8 39.8 19907 965 91.3 0.185 0.185 0.1863 0.251 0.2408 RANDOM 33.5
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 23.9 x_angle_deg 1.3 x_improper_angle_d 1.15 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
RMS Deviations Key Refinement Restraint Deviation x_dihedral_angle_d 23.9 x_angle_deg 1.3 x_improper_angle_d 1.15 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 x_mcbond_it x_mcangle_it x_scbond_it x_scangle_it
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 5603 Nucleic Acid Atoms Solvent Atoms 50 Heterogen Atoms 26
Software Software Software Name Purpose X-PLOR model building X-PLOR refinement MADNESS data reduction CCP4 data scaling SCALA data scaling TRUNCATE data scaling X-PLOR phasing