PDBe 3i06

X-ray diffraction
1.1Å resolution

Crystal structure of cruzain covalently bound to a purine nitrile

Released:

Function and Biology Details

Reaction catalysed:
Broad endopeptidase specificity similar to that of cathepsin L. 
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Cruzipain Chain: A
Molecule details ›
Chain: A
Length: 215 amino acids
Theoretical weight: 22.72 KDa
Source organism: Trypanosoma cruzi
Expression system: Escherichia coli
UniProt:
  • Canonical: P25779 (Residues: 123-337; Coverage: 48%)
Sequence domains: Papain family cysteine protease
Structure domains: Cysteine proteinases

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL7-1
Spacegroup: P6522
Unit cell:
a: 82.967Å b: 82.967Å c: 101.895Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.12 0.119 0.142
Expression system: Escherichia coli