6A2L

Crystal structure of quadruple mutant (N51I+C59R+S108N+I164L) Plasmodium falciparum DHFR-TS complexed with BT1, NADPH, and dUMP


X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1MICROBATCH4.5297PEG 4000, NH4OAc
Crystal Properties
Matthews coefficientSolvent content
2.6553.54

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 58.541α = 90
b = 157.166β = 90
c = 165.526γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 3152010-11-04MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSRRC BEAMLINE BL13B11NSRRCBL13B1

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
12.383094.50.04521.6458781
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)
12.382.4797.10.2533.8

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT1J3K2.3826.1955590297194.090.19950.19650.255RANDOM51.556
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]
2.05-0.86-1.2
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg39.257
r_dihedral_angle_4_deg18.097
r_dihedral_angle_3_deg17.023
r_dihedral_angle_1_deg7.652
r_angle_refined_deg1.58
r_chiral_restr0.11
r_bond_refined_d0.012
r_gen_planes_refined0.009
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms8762
Nucleic Acid Atoms
Solvent Atoms281
Heterogen Atoms198

Software

Software
Software NamePurpose
REFMACrefinement
HKL-2000data scaling
PDB_EXTRACTdata extraction
HKL-2000data reduction
PHASERphasing