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DIHYDROFOLATE REDUCTASE (E.C.1.5.1.3) COMPLEXED WITH 5,10-DIDEAZATETRAHYDROFOLATE
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model Other DHFR-FOLATE COMPLEX
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 7.4 pH 7.4
Crystal Properties Matthews coefficient Solvent content 2.15 42.8
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 34.808 α = 90 b = 44.761 β = 90 c = 100.826 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 293 AREA DETECTOR XUONG-HAMLIN MULTIWIRE 1996-10-10 M
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE RIGAKU RUH2R
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 2.3 100 93 0.075 3.1 6930
Refinement Statistics Diffraction ID Structure Solution Method Starting model Resolution (High) Resolution (Low) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) Mean Isotropic B X-RAY DIFFRACTION DIFFERENCE FOURIER DHFR-FOLATE COMPLEX 2.3 20 6930 93 0.174 0.1734
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 t_dihedral_angle_d 23.8 t_it 6.3 t_angle_deg 3.04 t_nbd 0.025 t_bond_d 0.019 t_trig_c_planes 0.017 t_gen_planes 0.006 t_incorr_chiral_ct t_pseud_angle
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1268 Nucleic Acid Atoms Solvent Atoms 56 Heterogen Atoms 32
Software Software Software Name Purpose TNT refinement UCSD data reduction UCSD data scaling TNT phasing