☰ Navigation Tabs
Candida albicans dihydrofolate reductase complexed with dihydro-nicotinamide-adenine-dinucleotide phosphate (NADPH) and 5-(PHENYLSULFANYL)-2,4-QUINAZOLINEDIAMINE (GW997)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1AI9 Candida albicans DHFR NADPH complex (1AI9)
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6.5 277 dihydro-nicotinamide-adenine-dinucleotide phosphate (NADPH),
5-(phenysulfanyl)-2,4-quinazolinediamine (GW997), PEG-3350,
Potassium 4-morphilineerhanesulfonic acid, dithiothreitol (DTT)
a three-fold excess of GW997 and three-fold excess of NADPH was
added to the C. albicans DHFR solution and let stand 277K overnight.
17-20 mg/ml C. albicans DHFR in 50 uM NADPH, 20 mm KMES, 1 mm DTT, PH 6.5
was mixed with an equal part of 26-34% PEG-3350, the reservoir solution., VAPOR DIFFUSION, HANGING DROP
Crystal Properties Matthews coefficient Solvent content 2.24 45.09
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 76.91 α = 90 b = 67.28 β = 93.07 c = 38.49 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 293 AREA DETECTOR XENTRONICS Huber graphite monochromator 1988-04-28 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE ELLIOTT GX-21 1.5418
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 1.7 25 81.8 0.05 0.05 21.26 3.26 113037 34713 -3 30.9
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) 1.7 1.81 41.14 0.2237 0.2237 2.15 2.31 2894
Refinement Statistics Diffraction ID Structure Solution Method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) Number Reflections (All) 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) Mean Isotropic B X-RAY DIFFRACTION DIRECT REPLACEMENT Candida albicans DHFR NADPH complex (1AI9) 1.7 10 2 34713 31488 81.8 0.156 0.156 0.156 0.1543
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 p_transverse_tor 31.4 p_staggered_tor 16.1 p_scangle_it 5.478 p_scbond_it 4.073 p_planar_tor 4 p_mcangle_it 3.218 p_mcbond_it 2.63 p_chiral_restr 0.276 p_singtor_nbd 0.166 p_multtor_nbd 0.154
RMS Deviations Key Refinement Restraint Deviation p_transverse_tor 31.4 p_staggered_tor 16.1 p_scangle_it 5.478 p_scbond_it 4.073 p_planar_tor 4 p_mcangle_it 3.218 p_mcbond_it 2.63 p_chiral_restr 0.276 p_singtor_nbd 0.166 p_multtor_nbd 0.154 p_xyhbond_nbd 0.127 p_planar_d 0.04 p_angle_d 0.034 p_bond_d 0.021 p_plane_restr 0.021 p_hb_or_metal_coord p_xhyhbond_nbd p_special_tor
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3195 Nucleic Acid Atoms Solvent Atoms 236 Heterogen Atoms 144
Software Software Software Name Purpose X-GEN data reduction FRODO model building PROFFT refinement X-GEN data scaling