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Crystal Structure of Human Carbonic Anhydrase II In-complex with 4-Acetylphenylboronic acid at 2.6 A Resolution
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3KS3
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 293 Crystallization solution was comprised of Tris-HCl buffer (50 mM, pH=7.4), and 2.9 M ammonium sulfate in sitting drop vapor diffusion setup. Crystallization drop was comprised of hCA-II (10 mg/mL), compound (5 mM) and reservoir buffer.
Crystal Properties Matthews coefficient Solvent content 2.07 40.62
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 42.068 α = 90 b = 41.029 β = 104.193 c = 71.628 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 Bruker PHOTON II 2022-11-10 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SEALED TUBE BRUKER D8 QUEST 1.5406
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) Rrim I (All) CC (Half) 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 2.6 20.55 99.7 0.173 0.204 0.973 8.3 3.4 7453 12.95
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) R Merge I (Observed) Rrim I (All) CC (Half) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 2.6 2.72 0.537 0.637 0.715 2.7
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 FREE R-VALUE 3KS3 2.6 20.54 1.94 7445 359 99.72 0.1995 0.1968 0.1958 0.2526 0.256 RANDOM 12.2
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 21.3005 f_angle_d 0.96 f_chiral_restr 0.0672 f_bond_d 0.0093 f_plane_restr 0.0057
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2049 Nucleic Acid Atoms Solvent Atoms 91 Heterogen Atoms 24
Software Software Software Name Purpose REFMAC refinement PHENIX refinement PROTEUM PLUS data reduction Aimless data scaling MOLREP phasing