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Candida albicans dihydrofolate reductase complexed with dihydro-nicotinamide-adenine-dinucleotide phosphate (NADPH) and 5-[(4-METHYLPHENYL)SULFANYL]-2,4-QUINAZOLINEDIAMINE (GW578)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1AI9 CANDIDA ALBICANS DHFR (PDB ENTRY 1AI9)
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6.5 277 DIHYDRO-NICOTINAMIDE-ADENINE-
DINUCLEOTIDE PHOSPHATE (NADPH), 5-[(4-METHYLPHENYL)
SULFANYL]-2,4-QUINAZOLINEDIAMINE (GW578), PEG-3350,
POTASSIUM 4-MORPHILINEETHANESULFONIC ACID (MES),
DITHIOTHREITOL (DTT).
A THREE-FOLD EXCESS OF GW578 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 GW578, 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 2.27 43
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 MONOCHROMATOR 1989-02-22 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE ELLIOTT GX-21
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 1.76 93.5 0.0761 0.0761 12.8 3.83 137080 35749 -3 30.7
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) 1.76 1.87 69.6 0.2983 0.2983 1.82 2.17 4426
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-Free (Depositor) Mean Isotropic B X-RAY DIFFRACTION DIRECT REPLACEMENT CANDIDA ALBICANS DHFR (PDB ENTRY 1AI9) 1.82 10 2 35749 31067 93.5 0.16 0.16 0.16
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 30.6 p_staggered_tor 14.6 p_scangle_it 6.486 p_scbond_it 5.522 p_mcangle_it 4.682 p_mcbond_it 4.215 p_planar_tor 3.6 p_chiral_restr 0.247 p_singtor_nbd 0.166 p_multtor_nbd 0.148
RMS Deviations Key Refinement Restraint Deviation p_transverse_tor 30.6 p_staggered_tor 14.6 p_scangle_it 6.486 p_scbond_it 5.522 p_mcangle_it 4.682 p_mcbond_it 4.215 p_planar_tor 3.6 p_chiral_restr 0.247 p_singtor_nbd 0.166 p_multtor_nbd 0.148 p_xyhbond_nbd 0.133 p_planar_d 0.038 p_angle_d 0.032 p_bond_d 0.021 p_plane_restr 0.02 p_hb_or_metal_coord p_xhyhbond_nbd p_special_tor
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3185 Nucleic Acid Atoms Solvent Atoms 348 Heterogen Atoms 160
Software Software Software Name Purpose X-GEN data reduction FRODO model building PROFFT refinement X-GEN data scaling