1M79

Candida albicans Dihydrofolate Reductase Complexed with Dihydro-Nicotinamide-Adenine-Dinucleotide Phosphate (NADPH) and 5-(4-methoxyphenoxy)-2,4-quinazolinediamine (GW1466)


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1AI9CANDIDA ALBICANS DHFR (PDB ENTRY 1AI9)

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP6.5277dihydro-nicotinamide-adenine-dinucleotide phosphate (NADPH), 5-(4-METHOXYPHENOXY)-2,4-QUINAZOLINEDIAMINE (GW1466), PEG-3350, Potassium 4-morphilineethanesulfonic acid (MES), dithiothreitol (DTT), pH 6.50, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Crystal Properties
Matthews coefficientSolvent content
2.2743

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 77.09α = 90
b = 67.03β = 93.3
c = 38.5γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray293AREA DETECTORXENTRONICSMONOCHROMATOR1989-03-16MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODEELLIOTT GX-211.5418

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)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
11.75083.450.06440.064421.12.4536008-333.74
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)RedundancyNumber Unique Reflections (All)
1.71.899.90.19780.19783.71.792562

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONDIRECT REPLACEMENTCANDIDA ALBICANS DHFR (PDB ENTRY 1AI9)1.7102360103390083.450.145
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
KeyRefinement Restraint Deviation
p_transverse_tor32.2
p_staggered_tor14.4
p_scangle_it8.323
p_scbond_it6.817
p_mcangle_it5.461
p_mcbond_it4.601
p_planar_tor3.9
p_chiral_restr0.245
p_singtor_nbd0.164
p_multtor_nbd0.147
RMS Deviations
KeyRefinement Restraint Deviation
p_transverse_tor32.2
p_staggered_tor14.4
p_scangle_it8.323
p_scbond_it6.817
p_mcangle_it5.461
p_mcbond_it4.601
p_planar_tor3.9
p_chiral_restr0.245
p_singtor_nbd0.164
p_multtor_nbd0.147
p_xyhbond_nbd0.137
p_planar_d0.038
p_angle_d0.031
p_bond_d0.02
p_plane_restr0.02
p_hb_or_metal_coord
p_xhyhbond_nbd
p_special_tor
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3193
Nucleic Acid Atoms
Solvent Atoms367
Heterogen Atoms162

Software

Software
Software NamePurpose
X-GENdata reduction
FRODOmodel building
PROFFTrefinement
X-GENdata scaling