5ELN

Crystal Structure of Lysyl-tRNA Synthetase from Cryptosporidium parvum complexed with L-lysine


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP8.5290CrpaA.00612.a.A3.PW37710 at 35 mg/ml, protein was incubated with 3 mM MgCl2, L-lysine, and AMPPNP, then mixed 1:1 with Index(g5): 25% (w/v) PEG-3350, 0.2 M lithium sulfate, 0.1 M Tris base/ HCl, pH = 8.5, cryoprotected with 20% ethylene glycol
Crystal Properties
Matthews coefficientSolvent content
2.5451.66

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 72.92α = 90
b = 119.45β = 90.31
c = 143.63γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARMOSAIC 225 mm CCDBeryllium Lenses2015-06-25MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 21-ID-F0.97872APS21-ID-F

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
11.95099.70.08111.893.8192804-320.37
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)
11.91.9599.90.4742.823.8

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTFREE R-VALUE3BJU1.919.981.36192621961699.70.1560.1540.19225.96
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_d13.238
f_angle_d0.889
f_chiral_restr0.055
f_bond_d0.008
f_plane_restr0.006
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms15969
Nucleic Acid Atoms
Solvent Atoms1942
Heterogen Atoms82

Software

Software
Software NamePurpose
PHENIXrefinement
XSCALEdata scaling
PHASERphasing
PDB_EXTRACTdata extraction
XDSdata reduction