1pci

X-ray diffraction
3.2Å resolution

Function and Biology Details

Reaction catalysed:
Hydrolysis of proteins with broad specificity for peptide bonds, similar to those of papain and chymopapain.
Biochemical function:
Cellular component:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-145152 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Caricain Chains: A, B, C
Molecule details ›
Chains: A, B, C
Length: 322 amino acids
Theoretical weight: 35.94 KDa
Source organism: Carica papaya
Expression system: Escherichia coli
UniProt:
  • Canonical: P10056 (Residues: 27-348; Coverage: 97%)
Sequence domains:
Structure domains: Cysteine proteinases

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SRS BEAMLINE PX9.6
Spacegroup: C2221
Unit cell:
a: 84Å b: 205.4Å c: 192.2Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.226 0.226 0.286
Expression system: Escherichia coli