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Structure of a K+ selective NaK mutant (NaK2K, Laue diffraction, no electric field)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model Other Room temperature NaK2K, monochromatic, SSRL
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 293.15 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 289 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 2 100 75.4 0.076 42.5 3.7 10684 18.3
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2 2.09 32.14 7.67
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) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE Room temperature NaK2K, monochromatic, SSRL 2.01 21.42 2.99 10593 552 74.97 0.1556 0.1534 0.1539 0.1975 0.1975 31.4
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 15.7579 f_angle_d 0.8581 f_chiral_restr 0.046 f_bond_d 0.0074 f_plane_restr 0.0064
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1503 Nucleic Acid Atoms Solvent Atoms 39 Heterogen Atoms 171
Software Software Software Name Purpose PHENIX refinement Precognition data reduction Epinorm data reduction PHENIX phasing