4Q15

Crystal Structure of Prolyl-tRNA synthetase (ProRS, Proline--tRNA ligase) from Plasmodium falciparum in complex with Halofuginone and AMPPNP in space group P212121 at 2.35 A


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 4OLF 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7289Protein incubated with 4mM each of AMPPnP, halofuginone, B-ME, and MgCl2 for ~5min, then added 1 to 1 with Wiz1/2(a10): 20% PEG-2000 MME, 0.1M Tris base/HCl, pH=7.0, cryoprotected with 20%EG, VAPOR DIFFUSION, SITTING DROP, temperature 289K
Crystal Properties
Matthews coefficientSolvent content
2.1342.16

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 76.58α = 90
b = 78.09β = 90
c = 167.82γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARMOSAIC 300 mm CCDBeryllium Lenses2014-03-20MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 21-ID-G0.97857APS21-ID-G

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
12.355099.60.06419.825.14279342603-3
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)
12.352.4199.90.5473.24

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENT4OLF2.3537.3311.344462742514211399.540.19620.1950.21944.51
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_d14.746
f_angle_d0.757
f_chiral_restr0.029
f_plane_restr0.004
f_bond_d0.003
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms7190
Nucleic Acid Atoms
Solvent Atoms273
Heterogen Atoms124

Software

Software
Software NamePurpose
XSCALEdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction