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Crystal structure of the G protein-gated inward rectifier K+ channel GIRK2 (Kir3.2) in complex with sodium and PIP2
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2E4F PDB ENTRY 2E4F
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6 293.15 50 mM sodium citrate, pH 6.0, 1 M sodium chloride, 20% PEG400, VAPOR DIFFUSION, HANGING DROP, temperature 293.15K
Crystal Properties Matthews coefficient Solvent content 4.19 70.68
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 85.851 α = 90 b = 85.851 β = 90 c = 177.862 γ = 90
Symmetry Space Group P 4 21 2
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 ADSC QUANTUM 315 2010-11-21 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS BEAMLINE X29A 1.075 NSLS X29A
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 2.975 41.727 97.4 0.108 10.2 5.8 13919
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 3 3.11 99.1 0.827 5.6 1359
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-Free (Depositor) R-Free (DCC) R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT PDB ENTRY 2E4F 2.98 41.727 13894 968 96.8 0.2419 0.24 0.2692 0.2643 RANDOM 100.8285
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] 0.9 0.9 -1.81
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 34.086 r_dihedral_angle_3_deg 17.494 r_dihedral_angle_4_deg 16.488 r_dihedral_angle_1_deg 6.032 r_scangle_it 2.272 r_scbond_it 1.282 r_angle_refined_deg 1.242 r_mcangle_it 0.833 r_mcbond_it 0.412 r_chiral_restr 0.08
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 34.086 r_dihedral_angle_3_deg 17.494 r_dihedral_angle_4_deg 16.488 r_dihedral_angle_1_deg 6.032 r_scangle_it 2.272 r_scbond_it 1.282 r_angle_refined_deg 1.242 r_mcangle_it 0.833 r_mcbond_it 0.412 r_chiral_restr 0.08 r_bond_refined_d 0.01 r_gen_planes_refined 0.004
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2526 Nucleic Acid Atoms Solvent Atoms Heterogen Atoms 37
Software Software Software Name Purpose SCALEPACK data scaling REFMAC refinement PDB_EXTRACT data extraction CBASS data collection DENZO data reduction MOLREP phasing