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CRYSTAL STRUCTURE OF ORTHORHOMBIC FORM OF D90E MUTANT OF ESCHERICHIA COLI L-ASPARAGINASE II
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3ECA Active dimer of native E.coli asparaginase II (PDB code: 3ECA)
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 9 292 PEG MME550, bicine, NaCl , pH 9.0, VAPOR DIFFUSION, HANGING DROP, temperature 292K
Crystal Properties Matthews coefficient Solvent content 2.17 43
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 225.419 α = 90 b = 128.049 β = 90 c = 62.567 γ = 90
Symmetry Space Group P 21 21 2
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 290 IMAGE PLATE MARRESEARCH 1998-09-10 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 ROTATING ANODE SIEMENS 1.54178
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) Net I Over Average Sigma (I) Redundancy Number Reflections (All) Number Reflections (Observed) Observed Criterion Sigma (F) Observed Criterion Sigma (I) B (Isotropic) From Wilson Plot 1 2.3 25 0.123 11.2 3.14 75961 75961 -3
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.3 2.41 93.9 0.813 1.8 3.07
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Number Reflections (All) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT Active dimer of native E.coli asparaginase II (PDB code: 3ECA) 2.3 10 74882 74882 1487 96.9 0.187 0.186 0.1862 0.20416 RANDOM 39.399
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] -1.12 -1.34 2.46
RMS Deviations Key Refinement Restraint Deviation p_scangle_it 3.518 p_scbond_it 2.167 p_mcangle_it 1.496 p_mcbond_it 0.813 p_chiral_restr 0.104 p_angle_d 0.025 p_bond_d 0.014 p_plane_restr 0.006 p_angle_deg p_planar_d
RMS Deviations Key Refinement Restraint Deviation p_scangle_it 3.518 p_scbond_it 2.167 p_mcangle_it 1.496 p_mcbond_it 0.813 p_chiral_restr 0.104 p_angle_d 0.025 p_bond_d 0.014 p_plane_restr 0.006 p_angle_deg p_planar_d p_hb_or_metal_coord p_singtor_nbd p_multtor_nbd p_xhyhbond_nbd p_xyhbond_nbd p_planar_tor p_staggered_tor p_orthonormal_tor p_transverse_tor p_special_tor
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 14019 Nucleic Acid Atoms Solvent Atoms 444 Heterogen Atoms
Software Software Software Name Purpose DENZO data reduction SCALEPACK data scaling EPMR phasing REFMAC refinement