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Crystal Structure of AChBP from Bulinus truncatus revals the conserved structural scaffold and sites of variation in nicotinic acetylcholine receptors
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1I9B PDB ENTRY 1I9B
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 10.5 0.1 M CAPS PH10.5, 0.2 M LITHIUMSULFATE, 2 M AMMONIUM SULFATE, pH 10.50
Crystal Properties Matthews coefficient Solvent content 2.9 57.7
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 76.945 α = 90 b = 219.018 β = 90 c = 166.965 γ = 90
Symmetry Space Group C 2 2 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 ADSC CCD 2003-03-19 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE ID14-4 ESRF ID14-4
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 44.72 98 0.13 12 5.1 93560 1.7
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 2.07 89 0.77 1.7 3.4
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 PDB ENTRY 1I9B 2 12 88439 4645 97.7 0.212 0.21 0.2113 0.249 0.2516 RANDOM 34.23
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] 3.91 -2.11 -1.8
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 35.107 r_dihedral_angle_4_deg 25.374 r_dihedral_angle_3_deg 15.954 r_dihedral_angle_1_deg 7.008 r_scangle_it 3.961 r_scbond_it 2.478 r_mcangle_it 1.846 r_angle_refined_deg 1.523 r_mcbond_it 1.112 r_symmetry_vdw_refined 0.238
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 35.107 r_dihedral_angle_4_deg 25.374 r_dihedral_angle_3_deg 15.954 r_dihedral_angle_1_deg 7.008 r_scangle_it 3.961 r_scbond_it 2.478 r_mcangle_it 1.846 r_angle_refined_deg 1.523 r_mcbond_it 1.112 r_symmetry_vdw_refined 0.238 r_nbd_refined 0.211 r_xyhbond_nbd_refined 0.159 r_symmetry_hbond_refined 0.139 r_chiral_restr 0.104 r_bond_refined_d 0.013 r_gen_planes_refined 0.006 r_bond_other_d r_angle_other_deg r_gen_planes_other r_nbd_other r_nbtor_refined r_nbtor_other r_xyhbond_nbd_other r_metal_ion_refined r_metal_ion_other r_symmetry_vdw_other r_symmetry_hbond_other r_symmetry_metal_ion_refined r_symmetry_metal_ion_other r_mcbond_other r_mcangle_other r_scbond_other r_scangle_other r_long_range_B_refined r_long_range_B_other r_rigid_bond_restr r_sphericity_free r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 8050 Nucleic Acid Atoms Solvent Atoms 424 Heterogen Atoms 56
Software Software Software Name Purpose REFMAC refinement MOSFLM data reduction SCALEPACK data scaling AMoRE phasing