1M7A

CANDIDA ALBICANS DIHYDROFOLATE REDUCTASE COMPLEXED WITH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE (NADPH) AND 7-[2-methoxy-1-(methoxymethyl)ethyl]-7H-pyrrolo[3,2-f] quinazoline-1,3-diamine (GW557)


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), 7-[2-METHOXY-1-(METHOXYMETHYL)ETHYL]-7H-PYRROLO[3,2-F] QUINAZOLINE-1,3-DIAMINE (GW557), 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 = 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 MONOCHROMATOR1989-05-06MSINGLE 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
11.765094.90.05520.055218.553.1836247-331.86
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)
1.761.8372.760.1930.1932.771.6934590

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation 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 (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONDIRECT REPLACEMENTNONECANDIDA ALBICANS DHFR (PDB ENTRY 1AI9)1.7610-32362483333594.90.15060.1506
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_tor30.6
p_staggered_tor14.8
p_scangle_it7.865
p_scbond_it6.581
p_mcangle_it5.353
p_mcbond_it4.686
p_planar_tor3.9
p_chiral_restr0.241
p_singtor_nbd0.164
p_multtor_nbd0.147
RMS Deviations
KeyRefinement Restraint Deviation
p_transverse_tor30.6
p_staggered_tor14.8
p_scangle_it7.865
p_scbond_it6.581
p_mcangle_it5.353
p_mcbond_it4.686
p_planar_tor3.9
p_chiral_restr0.241
p_singtor_nbd0.164
p_multtor_nbd0.147
p_xyhbond_nbd0.137
p_planar_d0.04
p_angle_d0.032
p_bond_d0.021
p_plane_restr0.021
p_hb_or_metal_coord
p_xhyhbond_nbd
p_special_tor
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3183
Nucleic Acid Atoms
Solvent Atoms353
Heterogen Atoms140

Software

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