1M78

CANDIDA ALBICANS DIHYDROFOLATE REDUCTASE COMPLEXED WITH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE (NADPH) AND 5-CHLORYL-2,4,6-QUINAZOLINETRIAMINE (GW1225)


X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1LIQUID DIFFUSION7.5277dihydro-nicotinamide-adenine-dinucleotide phosphate (NADPH), 5-chloryl-2,4,6-quinazolinetriamine (GW1225), PEG-3350, Potassium 4-morphilineethanesulfonic acid (MES), dithiothreitol (DTT), pH 7.50, LIQUID DIFFUSION, temperature 277K
Crystal Properties
Matthews coefficientSolvent content
2.2743

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 76.91α = 90
b = 67.28β = 93.07
c = 38.49γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray293AREA DETECTORXENTRONICSHuber graphite MONOCHROMATOR1988-03-29MSINGLE 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
11.715091.50.05370.053717.63.11837244-334.35
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)
1.711.8160.550.23370.23372.11.834052

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (I)Cut-off Sigma (F)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONDIRECT REPLACEMENTCANDIDA ALBICANS DHFR (PDB ENTRY 1AI9)1.7110-32372493274391.50.15570.15570.1557
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_tor30.8
p_staggered_tor14.7
p_scangle_it7.612
p_scbond_it6.119
p_mcangle_it5.207
p_mcbond_it4.628
p_planar_tor3.7
p_chiral_restr0.247
p_singtor_nbd0.164
p_multtor_nbd0.145
RMS Deviations
KeyRefinement Restraint Deviation
p_transverse_tor30.8
p_staggered_tor14.7
p_scangle_it7.612
p_scbond_it6.119
p_mcangle_it5.207
p_mcbond_it4.628
p_planar_tor3.7
p_chiral_restr0.247
p_singtor_nbd0.164
p_multtor_nbd0.145
p_xyhbond_nbd0.145
p_planar_d0.036
p_angle_d0.031
p_bond_d0.02
p_plane_restr0.019
p_hb_or_metal_coord
p_xhyhbond_nbd
p_special_tor
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3182
Nucleic Acid Atoms
Solvent Atoms348
Heterogen Atoms124

Software

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