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Human dihydrofolate reductase ternary complex with NADPH and inhibitor 26 (N~6~-METHYL-N~6~-(3,4,5-TRIFLUOROPHENYL)PYRIDO[2,3-D]PYRIMIDINE-2,4,6-TRIAMINE)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1U72
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6 287 30% AmSO4, 3% v/v ETOH, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 287K
Crystal Properties Matthews coefficient Solvent content 2.51 50.9
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 84.486 α = 90 b = 84.486 β = 90 c = 77.872 γ = 120
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 113 PIXEL PSI PILATUS 6M mirrors 2013-06-02 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SSRL BEAMLINE BL11-1 0.975 SSRL BL11-1
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 1.53 34.4 96.3 0.062 0.039 10.2 3.3 29910 2 2 27.9
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) 1 1.54 1.62 83 0.75 0.92 1.2 2.6 3757
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (I) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) 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 MOLECULAR REPLACEMENT THROUGHOUT 1u72 1.62 34.37 2 24614 1319 98.52 0.206 0.18502 0.18328 0.2074 0.2177 0.2333 RANDOM 23.247
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 r_dihedral_angle_2_deg 36.53 r_dihedral_angle_4_deg 16.707 r_dihedral_angle_3_deg 14.744 r_dihedral_angle_1_deg 6.832 r_angle_refined_deg 2.524 r_chiral_restr 0.184 r_bond_refined_d 0.026 r_gen_planes_refined 0.015
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1502 Nucleic Acid Atoms Solvent Atoms 105 Heterogen Atoms 71
Software Software Software Name Purpose XDS data scaling MOLREP phasing REFMAC refinement XDS data reduction SCALEPACK data scaling