3QGT

Crystal structure of Wild-type PfDHFR-TS COMPLEXED WITH NADPH, dUMP AND PYRIMETHAMINE


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1J3IPDB ENTRY 1J3I

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1MICROBATCH4.5297PEG 4000, NH4OAc, pH 4.5, microbatch, temperature 297K
Crystal Properties
Matthews coefficientSolvent content
2.4750.25

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 56.096α = 90
b = 154.436β = 90
c = 164.005γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDNonius Kappa CCDmirrors2004-08-29MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODECu FINE FOCUS1.54

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge 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
12.35099.30.08216.0276366733.928
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.32.38960.4682.346034

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (I)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 1J3I2.344.6216410763588318698.90.22170.2596RANDOM43.0398
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]
4.961-0.722-4.239
RMS Deviations
KeyRefinement Restraint Deviation
c_torsion_deg23
c_scangle_it2.74
c_mcangle_it2.49
c_angle_deg1.4
c_torsion_impr_deg0.77
c_bond_d0.007
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms9044
Nucleic Acid Atoms
Solvent Atoms313
Heterogen Atoms170

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
PDB_EXTRACTdata extraction
superguidata collection
HKL-2000data reduction
HKL-2000data scaling
CNSphasing