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X-ray Crystallographic Studies of Serotonin N-acetyltransferase Catalysis and Inhibition
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6.5 277 PEG 2000, MPD, ammonium sulfate, MES pH 6.5, magnesium acetate, DTT, spermidine, and lithium chloride. VAPOR DIFFUSION, HANGING DROP at 277K, temperature 277.0K
Crystal Properties Matthews coefficient Solvent content 1.78 30.81
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 53.313 α = 90 b = 68.716 β = 90 c = 89.725 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 100 CCD BRANDEIS - B4 1999-03-23 M MAD 2 1 x-ray CCD ADSC QUANTUM 4 1999-01-06 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X25 0.97946, 0.97927, 0.92011, 0.91970 NSLS X25 2 SYNCHROTRON CHESS BEAMLINE F1 0.9100 CHESS F1
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (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 2 25 91.5 0.089 0.089 16.3 8.3 11494 10517 -3
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 2 2.07 79.5 0.123 0.123 9.6 5 1148
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method 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-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MAD THROUGHOUT 2 25 11474 10402 1055 90.7 0.226 0.226 0.203 0.25 RANDOM
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] 6.943 -13.236 6.293
RMS Deviations Key Refinement Restraint Deviation c_scangle_it 2.95 c_scbond_it 1.94 c_mcangle_it 1.89 c_angle_deg 1.3 c_mcbond_it 1.27 c_bond_d 0.007
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1312 Nucleic Acid Atoms Solvent Atoms 167 Heterogen Atoms 129
Software Software Software Name Purpose SnB phasing MLPHARE phasing DM model building CNS refinement MARMAD data reduction DENZO data reduction SCALEPACK data scaling DM phasing