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Crystal structure of the human two pore domain K+ ion channel TRAAK (K2P4.1)
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 277 21-24% PEG400, 1 mM Fos-choline-12, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Crystal Properties Matthews coefficient Solvent content 5.69 78.37
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 87.938 α = 90 b = 130.852 β = 90 c = 132.779 γ = 90
Symmetry Space Group P 21 21 21
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 CCD MARMOSAIC 300 mm CCD 2011-07-05 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON APS BEAMLINE 23-ID-D 0.97833 APS 23-ID-D
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 3.3 40 73.4 0.056 11.7 3.7 17761
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 3.3 3.36 2.1 4.5 25
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method 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) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MIRAS THROUGHOUT 3.31 31.2 16792 880 75.4 0.3172 0.3169 0.3154 0.3228 0.3196 RANDOM 175.4904
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] -1.5 1.45 0.04
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 37.889 r_dihedral_angle_3_deg 18.874 r_dihedral_angle_4_deg 12.784 r_dihedral_angle_1_deg 3.988 r_angle_refined_deg 1.172 r_chiral_restr 0.065 r_bond_refined_d 0.008 r_gen_planes_refined 0.004
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3740 Nucleic Acid Atoms Solvent Atoms Heterogen Atoms 5
Software Software Software Name Purpose SCALEPACK data scaling SHARP phasing DM phasing REFMAC refinement PDB_EXTRACT data extraction HKL-2000 data reduction