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Human Carbonic Anhydrase II complexed with an inhibitor with a benzenesulfonamide group (4).
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 2.08 40.81
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 42.437 α = 90 b = 41.741 β = 104.26 c = 72.239 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 2013-12-15 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 1.08 50 98 0.055 12.07 3.28 103099 7.703
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 1.08 1.15 95 2.64 3.18
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 1.08 41.129 1.37 103095 5154 98.01 0.1451 0.1441 0.1448 0.1633 0.1633 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 11.915 f_angle_d 1.1 f_chiral_restr 0.079 f_bond_d 0.005 f_plane_restr 0.005
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2034 Nucleic Acid Atoms Solvent Atoms 244 Heterogen Atoms 43
Software Software Software Name Purpose PHENIX refinement XDS data reduction XDS data scaling PHASER phasing