3qsd

X-ray diffraction
1.3Å resolution

Structure of cathepsin B1 from Schistosoma mansoni in complex with CA074 inhibitor

Released:

Function and Biology Details

Reaction catalysed:
Hydrolysis of proteins with broad specificity for peptide bonds. Preferentially cleaves -Arg-Arg-|- bonds in small molecule substrates (thus differing from cathepsin L). In addition to being an endopeptidase, shows peptidyl-dipeptidase activity, liberating C-terminal dipeptides.
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
PDBe Complex ID:
PDB-CPX-185320 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Peptidase C1A papain C-terminal domain-containing protein Chain: A
Molecule details ›
Chain: A
Length: 254 amino acids
Theoretical weight: 28.51 KDa
Source organism: Schistosoma mansoni
Expression system: Komagataella pastoris
UniProt:
  • Canonical: Q8MNY2 (Residues: 87-340; Coverage: 79%)
Gene name: cb1.1
Sequence domains: Papain family cysteine protease
Structure domains: Cysteine proteinases

Ligands and Environments

3 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 19-BM
Spacegroup: P212121
Unit cell:
a: 33.177Å b: 79.16Å c: 90.61Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.116 0.114 0.155
Expression system: Komagataella pastoris