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Ornithine Aminotransferase (OAT) cocrystallized with its potent inhibitor - (S)-3-amino-4,4-difluorocyclopent-1-enecarboxylic acid (SS-1-148)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1OAT
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 293 OAT was buffer exchanged into crystallization buffer (50 mM Tricine pH 7.8) supplied with 1 mM 2-ketoglutarate. Then the protein was concentrated to 6 mg/mL. For each hanging drop, 2 uL of protein solution was mixed with an equal volume of well solution and 0.5 uL of 10 mM SS-1-148. The crystals with the best morphology and size grew in a final condition containing 10% PEG 6000, 200 mM NaCl, 10% glycerol, 100 mM Tricine pH 7.8.
Crystal Properties Matthews coefficient Solvent content 2.26 45.63
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 192.707 α = 90 b = 192.707 β = 90 c = 56.804 γ = 120
Symmetry Space Group P 31 1 2
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 PIXEL DECTRIS EIGER2 X 9M 2019-10-26 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON APS BEAMLINE 21-ID-D 1.1271 APS 21-ID-D
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) Rpim I (All) CC (Half) 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 1.955 48.18 91.6 0.169 0.083 0.997 5.6 8.7 79187
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) Rpim I (All) CC (Half) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 1.955 1.989 72.1 0.817 0.604 0.783 1.1 4.1
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) 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) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 1OAT 1.96 48.18 1.34 78483 3853 90.75 0.248 0.247 0.2455 0.2675 0.2665 36.934
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]
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 9432 Nucleic Acid Atoms Solvent Atoms 582 Heterogen Atoms 75
Software Software Software Name Purpose xia2 data scaling PHENIX refinement PDB_EXTRACT data extraction xia2 data reduction PHASER phasing