8E9P

Crystal structure of wild-type E. coli aspartate aminotransferase in the ligand-free form at 278 K


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP293HEPES, ammonium sulfate, PEG 400, maleate
Crystal Properties
Matthews coefficientSolvent content
2.7254.78

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 143.83α = 90
b = 143.83β = 90
c = 81.57γ = 120
Symmetry
Space GroupP 63

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray278PIXELDECTRIS PILATUS3 S 6M2021-06-01MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONALS BEAMLINE 8.3.10.9795ALS8.3.1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)CC (Half)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
12.0862.511000.20.9956.810.55709339.46
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.092.130.227

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-VALUE1X282.0847.081.3356664570998.420.17740.17430.205548.36
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_d19.8703
f_angle_d0.486
f_chiral_restr0.0379
f_plane_restr0.0026
f_bond_d0.0019
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms6141
Nucleic Acid Atoms
Solvent Atoms183
Heterogen Atoms5

Software

Software
Software NamePurpose
PHENIXrefinement
xia2data reduction
DIALSdata scaling
PHASERphasing