PDBe 2hhn

X-ray diffraction
1.55Å resolution

Cathepsin S in complex with non covalent arylaminoethyl amide.

Released:

Function and Biology Details

Reaction catalysed:
Similar to cathepsin L, but with much less activity on Z-Phe-Arg-|-NHMec, and more activity on the Z-Val-Val-Arg-|-Xaa compound. 
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assemblies composition:
monomeric
homo tetramer (preferred)
homo dimer
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Cathepsin S Chains: A, B
Molecule details ›
Chains: A, B
Length: 220 amino acids
Theoretical weight: 24.39 KDa
Source organism: Homo sapiens
Expression system: Spodoptera frugiperda
UniProt:
  • Canonical: P25774 (Residues: 112-331; Coverage: 70%)
Gene name: CTSS
Sequence domains: Papain family cysteine protease
Structure domains: Cysteine proteinases

Ligands and Environments

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 5.0.3
Spacegroup: P4122
Unit cell:
a: 85.532Å b: 85.532Å c: 150.403Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.157 0.155 0.18
Expression system: Spodoptera frugiperda