4DP3

Quadruple mutant (N51I+C59R+S108N+I164L) plasmodium falciparum dihydrofolate reductase-thymidylate synthase (PfDHFR-TS) complexed with P218 and NADPH


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1J3KPDB ENTRY 1J3K

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1MICROBATCH4.5297PEG 4000, NH4OAc, pH 4.5, Microbatch, temperature 297K
Crystal Properties
Matthews coefficientSolvent content
2.6152.95

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 58.499α = 90
b = 156.198β = 90
c = 164.586γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDNonius Kappa CCDMirrors2008-09-01MSINGLE 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
12.419.996.50.047215764057735145.8
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)
12.42.4986.70.2485107

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 DIFFRACTIONFOURIER SYNTHESISPDB ENTRY 1J3K2.419.915970257640290396.50.2050.23949.2
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]
13.88-3.28-10.6
RMS Deviations
KeyRefinement Restraint Deviation
c_scangle_it2.824
c_mcangle_it2.665
c_scbond_it1.878
c_mcbond_it1.527
c_angle_d1.34
c_bond_d0.007
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms9068
Nucleic Acid Atoms
Solvent Atoms441
Heterogen Atoms158

Software

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