1P6B

X-ray structure of phosphotriesterase, triple mutant H254G/H257W/L303T


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1batch9277PEG8000, CHES, sodium chloride, diethyl 4-methylbenzylphosphonate, pH 9, batch, temperature 277K
Crystal Properties
Matthews coefficientSolvent content
2.7254.47

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 130.4α = 90
b = 91.9β = 90.9
c = 69.7γ = 90
Symmetry
Space GroupC 1 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray277AREA DETECTORSIEMENS HI-STARsupper long mirrors2001-07-10MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RU2001.5418

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (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
11.93093.10.07111.42.76025160251
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
1.91.9977.50.2932.31.66503

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)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 DIFFRACTIONFOURIER SYNTHESISTHROUGHOUTPDB entry 1DPM1.9306025160251608693.10.1790.1790.1760.231RANDOM
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
t_angle_deg2.18
t_bond_d0.012
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms5055
Nucleic Acid Atoms
Solvent Atoms378
Heterogen Atoms45

Software

Software
Software NamePurpose
FRAMBOdata collection
SAINTdata reduction
TNTrefinement
SAINTdata scaling
TNTphasing