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Crystal structure of GluR5 ligand-binding core in complex with ammonium ions at 1.68 Angstrom resolution
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3C31 PDB entry 3C31
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 6 293 20% PEG 4000, 125 mM NH4Cl, 175 mM (NH4)2(SO4), 100 mM NH4 cacodylate, 4 mM Kainic acid, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties Matthews coefficient Solvent content 2.51 50.93
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 70.76 α = 90 b = 70.76 β = 90 c = 234.323 γ = 90
Symmetry Space Group P 41 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 300 mm CCD 2007-11-14 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON APS BEAMLINE 22-ID 1.00000 APS 22-ID
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 1.68 40 99.3 0.065 16.3 6 68619 68619 21.8
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 1.68 1.76 99.6 0.445 4.5 5.1
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Number Reflections (All) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) 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 FOURIER SYNTHESIS THROUGHOUT PDB entry 3C31 1.68 39.07 64816 64816 3453 99.5 0.16858 0.16858 0.16683 0.169 0.2006 0.2032 RANDOM 20.335
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] 0.87 0.87 -1.75
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 31.622 r_dihedral_angle_4_deg 19.188 r_dihedral_angle_3_deg 14.159 r_dihedral_angle_1_deg 5.992 r_scangle_it 4.981 r_scbond_it 3.135 r_mcangle_it 1.868 r_angle_refined_deg 1.765 r_mcbond_it 1.049 r_chiral_restr 0.141
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 31.622 r_dihedral_angle_4_deg 19.188 r_dihedral_angle_3_deg 14.159 r_dihedral_angle_1_deg 5.992 r_scangle_it 4.981 r_scbond_it 3.135 r_mcangle_it 1.868 r_angle_refined_deg 1.765 r_mcbond_it 1.049 r_chiral_restr 0.141 r_bond_refined_d 0.019 r_gen_planes_refined 0.009 r_bond_other_d r_angle_other_deg r_gen_planes_other r_nbd_refined r_nbd_other r_nbtor_refined r_nbtor_other r_xyhbond_nbd_refined r_xyhbond_nbd_other r_metal_ion_refined r_metal_ion_other r_symmetry_vdw_refined r_symmetry_vdw_other r_symmetry_hbond_refined r_symmetry_hbond_other r_symmetry_metal_ion_refined r_symmetry_metal_ion_other r_mcbond_other r_rigid_bond_restr r_sphericity_free r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 4048 Nucleic Acid Atoms Solvent Atoms 538 Heterogen Atoms 54
Software Software Software Name Purpose REFMAC refinement HKL-2000 data collection HKL-2000 data reduction HKL-2000 data scaling