Navigation Tabs Joint neutron and x-ray crystal structure of human carbonic anhydrase IX mimic (saccharin-sugar conjugate complex)
X-RAY DIFFRACTION - NEUTRON DIFFRACTION
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4RIU
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 8.5 293 1.2 M sodium citrate, 0.1 M Tris pH 8.5 in Hampton sandwich box set-ups. Drops were 150-250 uL and we set-up in a 1:1 ratio. To get the complex with SGC ligand we did "dry co-crystallization".
Crystal Properties Matthews coefficient Solvent content 2.16 43.07
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 42.61 α = 90 b = 41.94 β = 104.01 c = 72.77 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 293 CCD ADSC QUANTUM 315r 2016-12-15 M SINGLE WAVELENGTH 2 1 neutron 293 IMAGE PLATE MAATEL IMAGINE 2018-03-01 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON ESRF BEAMLINE BM30A 1.04 ESRF BM30A 2 NUCLEAR REACTOR FRM II BEAMLINE BIODIFF 2.66 FRM II BIODIFF
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) R Sym I (Observed) Rrim I (All) Rpim I (All) CC (Half) R Split (All) 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 1.3 36 97.6 0.051 22.3 7.3 60056 2 2 50 93 0.168 3.9 2.3 16153
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) R Merge I (Observed) R-Sym I (Observed) Rrim I (All) Rpim I (All) CC (Half) R Split (All) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 1.3 1.4 0.524 2 2 2.06 0.469
Refinement Statistics Diffraction ID Structure Solution Method Resolution (High) Resolution (Low) Cut-off Sigma (I) Cut-off Sigma (F) Number Reflections (All) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT 1.3 20.97 1.37 60047 3601 97.62 0.1484 0.1478 0.1551 NEUTRON DIFFRACTION MOLECULAR REPLACEMENT 2 29.009 1.5 16142 1603 92.95 0.1931 0.191 0.2122
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 19.992 f_dihedral_angle_d 19.992 f_angle_d 1.173 f_angle_d 1.173 f_chiral_restr 0.092 f_chiral_restr 0.092 f_bond_d 0.009 f_bond_d 0.009 f_plane_restr 0.006 f_plane_restr 0.006
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 2052 Nucleic Acid Atoms Solvent Atoms 209 Heterogen Atoms 31
Software Software Software Name Purpose PHENIX refinement HKL-2000 data reduction HKL-2000 data scaling PHENIX phasing