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Crystal structure of human two pore domain potassium ion channel TREK1 (K2P2.1)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4BW5
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 277 0.25M magnesium formate, 0.1M Sodium Cacodylate pH 6.5, 17% PEG3000, 5% PEG400
Crystal Properties Matthews coefficient Solvent content 4.05 69.68
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 74.47 α = 90 b = 105.975 β = 90 c = 128.27 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 PIXEL PSI PILATUS 6M 2013-12-07 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON DIAMOND BEAMLINE I24 0.9686 Diamond I24
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 2.6 39.65 99.6 0.073 15.5 7.3 31773 31773 74.16
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 2.6 2.67 93.1 1.836 1.1 6.3
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) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 4BW5 2.6 33.94 31710 1607 99.4 0.2322 0.2308 0.2467 0.258 0.2738 RANDOM 113.28
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] -8.0728 -20.667 28.7397
RMS Deviations Key Refinement Restraint Deviation t_other_torsion 2.71 t_omega_torsion 2.22 t_angle_deg 1 t_bond_d 0.009 t_dihedral_angle_d t_incorr_chiral_ct t_pseud_angle t_trig_c_planes t_gen_planes t_it
RMS Deviations Key Refinement Restraint Deviation t_other_torsion 2.71 t_omega_torsion 2.22 t_angle_deg 1 t_bond_d 0.009 t_dihedral_angle_d t_incorr_chiral_ct t_pseud_angle t_trig_c_planes t_gen_planes t_it t_nbd t_improper_torsion t_chiral_improper_torsion t_sum_occupancies t_utility_distance t_utility_angle t_utility_torsion t_ideal_dist_contact
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 3746 Nucleic Acid Atoms Solvent Atoms 27 Heterogen Atoms 168
Software Software Software Name Purpose BUSTER refinement XDS data reduction Aimless data scaling PHASER phasing