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The structure of a tetrameric alpha-carbonic anhydrase from Thermovibrio ammonificans reveals a core formed around intermolecular disulfides, which contribute to its thermostability.
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4C3T PDB ENTRY 4C3T
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 5.5 9% ETHYLENE GLYCOL, 9 % PEG8000, 10 MM CARBOXYLIC ACIDS ADDITIVE MIXTURE, 100MM MES PH 6.5.
Crystal Properties Matthews coefficient Solvent content 3.66 66
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 163.75 α = 90 b = 283.02 β = 90 c = 52.17 γ = 90
Symmetry Space Group P 21 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 PIXEL DECTRIS PILATUS 2012-08-10 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON DIAMOND BEAMLINE I04-1 Diamond I04-1
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 1.85 42.01 99.6 0.1 13.7 7.5 206954
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 1.85 1.9 99.6 0.95 2.4 7.4
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 4C3T 1.85 42.01 196389 10399 99.48 0.17341 0.17181 0.1721 0.20404 0.2042 RANDOM 28.828
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] -0.4 -0.8 1.2
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 34.485 r_dihedral_angle_4_deg 13.471 r_dihedral_angle_3_deg 13.177 r_dihedral_angle_1_deg 5.742 r_mcangle_it 3.877 r_scbond_it 3.843 r_mcbond_it 3.097 r_angle_refined_deg 1.266 r_chiral_restr 0.114 r_bond_refined_d 0.008
RMS Deviations Key Refinement Restraint Deviation r_dihedral_angle_2_deg 34.485 r_dihedral_angle_4_deg 13.471 r_dihedral_angle_3_deg 13.177 r_dihedral_angle_1_deg 5.742 r_mcangle_it 3.877 r_scbond_it 3.843 r_mcbond_it 3.097 r_angle_refined_deg 1.266 r_chiral_restr 0.114 r_bond_refined_d 0.008 r_gen_planes_refined 0.005 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_mcangle_other r_scbond_other r_scangle_it 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 10878 Nucleic Acid Atoms Solvent Atoms 1918 Heterogen Atoms 435
Software Software Software Name Purpose REFMAC refinement XDS data reduction xia2 data reduction Aimless data scaling MOLREP phasing