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Crystal structure of Cas13a-B complex
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 5XWP
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, HANGING DROP 289 1.0 mM Spermidine, 5 mM Magnesium chloride, 0.05 M Sodium cacodylate pH 7.0, 10% (v/v) tert-Butanol
Crystal Properties Matthews coefficient Solvent content 4.3 71.4
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 200.163 α = 90 b = 200.163 β = 90 c = 348.201 γ = 90
Symmetry Space Group P 43 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 6M 2024-12-28 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON SSRF BEAMLINE BL19U1 0.97861 SSRF BL19U1
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (Observed) Rpim I (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 3.6 50 99.6 0.096 5.5 15.7 66035 14.8
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) Rpim I (All) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 3.6 3.66 98.9 0.263 3 13.8
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method 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) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE 3.7 49.53 1.99 65037 1998 85.2 0.3221 0.3218 0.3218 0.3303 0.3306 38.51
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 16.3966 f_angle_d 0.9583 f_chiral_restr 0.0525 f_plane_restr 0.0053 f_bond_d 0.0043
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 26955 Nucleic Acid Atoms Solvent Atoms 92 Heterogen Atoms
Software Software Software Name Purpose PHENIX refinement HKL-3000 data scaling HKL-3000 data reduction Coot model building PHENIX phasing