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Large improvement in the thermal stability of a tetrameric malate dehydrogenase by single point mutations at the dimer-dimer interface
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1GUY PDB ENTRY 1GUY
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 6.5 20-40% PEG400, 100MM NASUCCINATE, PH 6.5
Crystal Properties Matthews coefficient Solvent content 4.76 74
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 149.79 α = 90 b = 149.79 β = 90 c = 111.264 γ = 90
Symmetry Space Group P 43 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 110 IMAGE PLATE MARRESEARCH M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE BM1A ESRF BM1A
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 2.1 30 92.1 0.137 18.8 12.5 73640
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 2.1 2.18 80.9 0.52 3.2
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB ENTRY 1GUY 2.1 30 2 61257 6300 92.1 0.235 0.235 0.2004 0.262 0.222 RANDOM 28.7
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 Key Refinement Restraint Deviation c_dihedral_angle_d 21.6 c_angle_deg 1.26 c_bond_d 0.007 c_bond_d_na c_bond_d_prot c_angle_d c_angle_d_na c_angle_d_prot c_angle_deg_na c_angle_deg_prot
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 21.6 c_angle_deg 1.26 c_bond_d 0.007 c_bond_d_na c_bond_d_prot c_angle_d c_angle_d_na c_angle_d_prot c_angle_deg_na c_angle_deg_prot c_dihedral_angle_d_na c_dihedral_angle_d_prot c_improper_angle_d c_improper_angle_d_na c_improper_angle_d_prot c_mcbond_it c_mcangle_it c_scbond_it c_scangle_it
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 4574 Nucleic Acid Atoms Solvent Atoms 453 Heterogen Atoms 104
Software Software Software Name Purpose CNS refinement DENZO data reduction SCALEPACK data scaling CNS phasing