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Crystal Structure of Dihydrofolate reductase (DHFR) from Mycobacterium ulcerans Agy99 in complex with NADP and inhibitor MAM758
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 8TA0
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 6.5 291 Morpheus E4: 12.5%(v/v) MPD, 12.5%(v/v) PEG 1000, 12.5%(w/v) PEG 3350, 100 mM Imidazole/MES, pH 6.5, 30 mM Diethylene glycol, 30 mM Triethyleneglycol, 30 mM Tetraethylene glycol and 30 mM Pentaethylene glycol. MyulA.01062.a.B13.PS38720 at 8.9 mg/mL. 2mM MAM758 and 2mM NADP added to the protein prior to crystallization. Plate 13387 well E4 drop 2, Cryo: direct
Crystal Properties Matthews coefficient Solvent content 2.19 43.87
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 28.606 α = 90 b = 66.332 β = 91.16 c = 43.973 γ = 90
Symmetry Space Group P 1 21 1
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 Bruker PHOTON III 2023-06-26 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SEALED TUBE BRUKER D8 QUEST 1.5418
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) Rrim I (All) 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 1.75 43.95 99.9 0.118 0.123 0.035 0.997 18.1 12.4 16609
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) Rrim I (All) Rpim I (All) CC (Half) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 1.75 1.78 99.6 1.404 1.504 0.51 0.48 8.5
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method 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 FREE R-VALUE 1.75 24.2 1.01 16573 788 99.76 0.163 0.161 0.1707 0.2037 0.2095
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 f_dihedral_angle_d 13.463 f_angle_d 1.067 f_chiral_restr 0.055 f_plane_restr 0.014 f_bond_d 0.01
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1252 Nucleic Acid Atoms Solvent Atoms 154 Heterogen Atoms 78
Software Software Software Name Purpose PHENIX refinement Aimless data scaling XDS data reduction PHASER phasing