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Human Carbonic Anhydrase II complexed with an inhibitor with a benzenesulfonamide group (1).
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1CNI
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 7.8 291 2.5 uL of the protein solution (10 mg/ml hCAII in 50 mM Tris pH 7.8) were mixed with 2.5 uL of the well solution (2.7 M (NH4)SO4, 100 mM Tris, pH 7.8, saturated with p-chloromercurybenzoicacid) and placed as a hanging drop. Crystals appeared after several days. The crystals were soaked in 3.0 M (NH4)SO4, 100 mM Tris, pH 7.8, saturated with the inhibitor, for 1 day.
Crystal Properties Matthews coefficient Solvent content 2.07 40.58
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 42.385 α = 90 b = 41.508 β = 104.43 c = 72.254 γ = 90
Symmetry Space Group P 1 21 1
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 6M 2014-02-15 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON BESSY BEAMLINE 14.1 0.91841 BESSY 14.1
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Sym 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 1.01 50 98.7 0.049 10.96 3.2 126327
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 1.01 1.07 96 2.01 2.8
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Starting model Resolution (High) Resolution (Low) Cut-off Sigma (F) 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 1CNI 1.01 34.987 1.37 126325 6317 98.74 0.1518 0.1509 0.1507 0.1703 0.1705 random selection
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]
RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 12.23 f_angle_d 1.08 f_chiral_restr 0.078 f_bond_d 0.005 f_plane_restr 0.005
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2012 Nucleic Acid Atoms Solvent Atoms 249 Heterogen Atoms 27
Software Software Software Name Purpose PHENIX refinement XDS data reduction XDS data scaling PHASER phasing