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Structure of a K+ selective NaK mutant (NaK2K, Laue diffraction) in the presence of an electric field of ~0.8MV/cm along the crystallographic z axis, 200ns, with eightfold extrapolation of structure factor differences
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 8CTN
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 293 100mM KCl, 200mM potassium citrate tribasic monohydrate, 100mM MES (pH 6.0 or 6.5), 56%-68% 2-methyl-2,4-pentanediol
(MPD)
Crystal Properties Matthews coefficient Solvent content 2.51 51.07
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 68.816 α = 90 b = 68.816 β = 90 c = 90.365 γ = 90
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 283.15 CCD RAYONIX MX340-HS 2020-03-21 L LAUE
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON APS BEAMLINE 14-ID-B 1.02-1.15 APS 14-ID-B
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 50 75.3 0.077 42.48 3.7 10678 13.58
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 2.09 31.1 0.077 7.53
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) 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) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE 8CTN 2.01 27.59 9590 490 67.83 0.3394 0.3376 0.3359 0.3744 0.3742 24.26
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 f_dihedral_angle_d 16.9561 f_angle_d 1.0671 f_chiral_restr 0.0564 f_plane_restr 0.0062 f_bond_d 0.0057
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1498 Nucleic Acid Atoms Solvent Atoms 50 Heterogen Atoms 162
Software Software Software Name Purpose PHENIX refinement Precognition data reduction Epinorm data reduction PHENIX phasing Precognition data scaling