3S9U

Bacillus anthracis Dihydrofolate Reductase bound to propargyl-linked TMP analog, UCP120J


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 3E0BPDB entry 3E0B

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP300initial hits were grown at room temperature by hanging drop diffusion in 21.0% (w/v) PEG 10,000, 0.1 M MES, pH 6.75, at an equal ratio of protein to crystallization solution. Microseeding was used to obtain isolated crystals in 11% PEG 10,000 and 0.1 MES, pH 6.75 at a protein concentration of 8 mg/mL, VAPOR DIFFUSION, HANGING DROP, temperature 300K
Crystal Properties
Matthews coefficientSolvent content
2.6152.96

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 78.187α = 90
b = 78.187β = 90
c = 67.094γ = 90
Symmetry
Space GroupP 42

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray77.2CCDADSC QUANTUM 3152008-08-17MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X29A0.979505NSLSX29A

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
11.930.8399.90.0730.07325.67.4303643036455
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)
11.91.9599.90.3970.3973.56.52228

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)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-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB entry 3E0B1.930.83309630364161999.940.223110.191610.189980.22311RANDOM20.748
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
r_dihedral_angle_2_deg33.594
r_dihedral_angle_3_deg11.913
r_dihedral_angle_4_deg10.003
r_dihedral_angle_1_deg5.526
r_scangle_it1.873
r_angle_refined_deg1.131
r_scbond_it1.085
r_mcangle_it0.94
r_mcbond_it0.496
r_chiral_restr0.076
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg33.594
r_dihedral_angle_3_deg11.913
r_dihedral_angle_4_deg10.003
r_dihedral_angle_1_deg5.526
r_scangle_it1.873
r_angle_refined_deg1.131
r_scbond_it1.085
r_mcangle_it0.94
r_mcbond_it0.496
r_chiral_restr0.076
r_bond_refined_d0.007
r_gen_planes_refined0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2760
Nucleic Acid Atoms
Solvent Atoms284
Heterogen Atoms150

Software

Software
Software NamePurpose
CBASSdata collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling