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Tetramerization dynamics of the C-terminus underlies isoform-specific cAMP-gating in HCN channels
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1Q43
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION 4.6 278 20% PEG 8000, 0.5M NaCl, 0.1M Citrate buffer (pH 4.6), 10% glycerol, VAPOR DIFFUSION, temperature 278K
Crystal Properties Matthews coefficient Solvent content 2.42 49.21
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 96.73 α = 90 b = 96.73 β = 90 c = 50.79 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 MARMOSAIC 225 mm CCD 2010-01-29 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE ID23-2 0.8726 ESRF ID23-2
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 2.3 35.03 99.8 0.128 9.6 11143 14.3 14.3
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 2.3 2.42 100
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) Number Reflections (All) 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 1Q43 2.3 32.93 2 10592 10592 531 99.49 0.20377 0.20041 0.198 0.2715 0.2696 RANDOM 25.789
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] 0.01 0.01 -0.02
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 31.378 r_dihedral_angle_3_deg 18.303 r_dihedral_angle_4_deg 16.291 r_dihedral_angle_1_deg 6.159 r_scangle_it 5.508 r_scbond_it 3.408 r_mcangle_it 1.951 r_angle_refined_deg 1.899 r_mcbond_it 0.989 r_chiral_restr 0.123
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 31.378 r_dihedral_angle_3_deg 18.303 r_dihedral_angle_4_deg 16.291 r_dihedral_angle_1_deg 6.159 r_scangle_it 5.508 r_scbond_it 3.408 r_mcangle_it 1.951 r_angle_refined_deg 1.899 r_mcbond_it 0.989 r_chiral_restr 0.123 r_bond_refined_d 0.021 r_gen_planes_refined 0.008
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 1659 Nucleic Acid Atoms Solvent Atoms 86 Heterogen Atoms 22
Software Software Software Name Purpose MAR345dtb data collection MOLREP phasing REFMAC refinement MOSFLM data reduction SCALA data scaling