8OFA
Crystal structure of human cathepsin L interacting with tosyl phenylalanyl chloromethyl ketone (TPCK)
Experimental procedure
Experimental method | SINGLE WAVELENGTH |
Source type | SYNCHROTRON |
Source details | PETRA III, DESY BEAMLINE P11 |
Synchrotron site | PETRA III, DESY |
Beamline | P11 |
Temperature [K] | 100 |
Detector technology | PIXEL |
Collection date | 2022-04-09 |
Detector | DECTRIS EIGER2 X 16M |
Wavelength(s) | 1.033 |
Spacegroup name | P 1 |
Unit cell lengths | 56.960, 62.730, 67.370 |
Unit cell angles | 105.06, 94.09, 115.54 |
Refinement procedure
Resolution | 49.620 - 1.900 |
R-factor | 0.1758 |
Rwork | 0.175 |
R-free | 0.21710 |
Structure solution method | MOLECULAR REPLACEMENT |
RMSD bond length | 0.010 |
RMSD bond angle | 1.008 |
Data reduction software | XDS |
Data scaling software | XSCALE |
Phasing software | PHENIX (1.13-2998_9999) |
Refinement software | PHENIX (1.18_3861) |
Data quality characteristics
Overall | Outer shell | |
Low resolution limit [Å] | 49.620 | 1.950 |
High resolution limit [Å] | 1.900 | 1.900 |
Rmeas | 0.123 | 0.479 |
Number of reflections | 114947 | 8667 |
<I/σ(I)> | 11.27 | 3.57 |
Completeness [%] | 91.7 | 92.4 |
Redundancy | 3.8 | |
CC(1/2) | 0.996 |
Crystallization Conditions
crystal 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. |