3WLX

Crystal structure of low-specificity L-threonine aldolase from Escherichia coli


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7.52930.2M calcium chloride, 0.1M HEPES pH 7.5, 28% (v/v) PEG 400, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Crystal Properties
Matthews coefficientSolvent content
2.2745.81

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 75.73α = 90
b = 100.34β = 90
c = 174.62γ = 90
Symmetry
Space GroupC 2 2 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 2102010-03-02MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONPHOTON FACTORY BEAMLINE AR-NW12A1.00000Photon FactoryAR-NW12A

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
12.512099.40.0572301019.27
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)
12.5199.50.1037

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT2.5119.6811.3823007118199.610.18550.18290.2319RANDOM28.1
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
f_dihedral_angle_d14.475
f_angle_d0.724
f_chiral_restr0.026
f_bond_d0.003
f_plane_restr0.003
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms5038
Nucleic Acid Atoms
Solvent Atoms225
Heterogen Atoms40

Software

Software
Software NamePurpose
ADSCdata collection
MOLREPphasing
PHENIXrefinement
XDSdata reduction
XDSdata scaling