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Sequence induced trimerization of krait PLA2: crystal structure of the trimeric form of krait PLA2
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1FE5 PDB ID 1FE5
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 8 281 50 mM Tris.HCl, 3.0 M NaCl, 1mM NaN3, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 281.0K
Crystal Properties Matthews coefficient Solvent content 2.39 48.6
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 80.949 α = 90 b = 80.572 β = 90.35 c = 57.098 γ = 90
Symmetry Space Group C 1 2 1
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 180 IMAGE PLATE MARRESEARCH 2000-08-22 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON EMBL/DESY, HAMBURG BEAMLINE X11 EMBL/DESY, HAMBURG X11
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Sym 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 2.5 20 99.9 0.091 7.8 4.98 12779 12745 29.7
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 2.45 2.6 99.6 0.203 4.98 12779
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 (All) 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 ID 1FE5 2.5 14.28 12779 12533 644 98.4 0.201 0.198 0.198 0.1974 0.262 0.2626 RANDOM 22.6
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] -0.83 0.69 1.75 -0.93
RMS Deviations Key Refinement Restraint Deviation c_dihedral_angle_d 22.9 c_angle_deg 1.3 c_improper_angle_d 0.86 c_bond_d 0.007
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2694 Nucleic Acid Atoms Solvent Atoms 258 Heterogen Atoms
Software Software Software Name Purpose MAR345 data collection SCALEPACK data scaling AMoRE phasing CNS refinement