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Crystal structure of human cathepsin L interacting with tosyl phenylalanyl chloromethyl ketone (TPCK)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3OF9
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION 293 Mature cathepsin L at a concentration of 7 mg/ml was equilibrated against 27% w/v PEG 8000, 1 mM TCEP and 0.1 M sodium acetate at pH 4.0. Crystals, which grew at 293 K to final size after approximately 3 days, were transferred to a compound soaking solution containing 22% w/v PEG 8000, 1 mM TCEP and 0.1 M sodium acetate at pH 4.0 as well as 5% v/v DMSO and 10% v/v PEG 400.
Crystal Properties Matthews coefficient Solvent content 2.12 42.02
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 56.96 α = 105.065 b = 62.73 β = 94.087 c = 67.37 γ = 115.543
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 EIGER2 X 16M 2022-04-09 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON PETRA III, DESY BEAMLINE P11 1.033 PETRA III, DESY P11
Data Collection Overall ID # Resolution (High) Resolution (Low) Percent Possible (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 1.9 49.62 91.7 0.123 0.996 11.27 3.8 114947 18.04
Highest Resolution Shell ID # Resolution (High) Resolution (Low) Percent Possible (All) Percent Possible (Observed) Rrim I (All) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All) 1 1.9 1.95 92.4 0.479 3.57
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 1.9 49.62 1.98 114894 1900 91.75 0.1758 0.1751 0.1763 0.2171 0.2192 23.11
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 22.1963 f_angle_d 1.0078 f_chiral_restr 0.0542 f_plane_restr 0.0101 f_bond_d 0.0099
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 6658 Nucleic Acid Atoms Solvent Atoms 556 Heterogen Atoms 293
Software Software Software Name Purpose PHENIX refinement XDS data reduction XSCALE data scaling PHENIX phasing