6V2G

Complex of mutant (K162M) of E. coli L-asparaginase II with L-Asp. Covalent acyl-enzyme intermediate and tetrahedral intermediate.


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 3ECA3eca, monomer A

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP52930.17 M sodium-citrate pH 6 and 18% (w/v) PEG3350, 5 mM L-Asp
Crystal Properties
Matthews coefficientSolvent content
2.0740.54

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 62.097α = 90
b = 125.971β = 96.7
c = 76.376γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS EIGER X 4MMultilayer X-ray mirrors VariMax HF2019-04-05MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU MICROMAX-007 HF1.5418

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Rrim I (All)Rpim I (All)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
11.94097.40.0440.0530.02913.73.290100
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Rrim I (All)Rpim I (All)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.91.9372.60.5230.6580.3930.4842.3

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT3eca, monomer A1.924.9385750267396.50.1510.1490.207RANDOM32.28
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]
-0.220.250.070.09
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg39.932
r_dihedral_angle_1_deg17.762
r_dihedral_angle_4_deg15.714
r_dihedral_angle_3_deg15.136
r_angle_refined_deg2.285
r_angle_other_deg2.092
r_chiral_restr0.118
r_bond_refined_d0.019
r_gen_planes_refined0.014
r_gen_planes_other0.002
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg39.932
r_dihedral_angle_1_deg17.762
r_dihedral_angle_4_deg15.714
r_dihedral_angle_3_deg15.136
r_angle_refined_deg2.285
r_angle_other_deg2.092
r_chiral_restr0.118
r_bond_refined_d0.019
r_gen_planes_refined0.014
r_gen_planes_other0.002
r_bond_other_d0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_it
r_mcbond_other
r_mcangle_it
r_mcangle_other
r_scbond_it
r_scbond_other
r_scangle_it
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms9804
Nucleic Acid Atoms
Solvent Atoms1110
Heterogen Atoms

Software

Software
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
PDB_EXTRACTdata extraction
PHASERphasing