3fju

X-ray diffraction
1.6Å resolution

Ascaris suum carboxypeptidase inhibitor in complex with human carboxypeptidase A1

Released:
Source organisms:

Function and Biology Details

Reaction catalysed:
Release of a C-terminal amino acid, but little or no action with -Asp, -Glu, -Arg, -Lys or -Pro.
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-147209 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Carboxypeptidase A1 Chain: A
Molecule details ›
Chain: A
Length: 307 amino acids
Theoretical weight: 34.47 KDa
Source organism: Homo sapiens
Expression system: Komagataella pastoris
UniProt:
  • Canonical: P15085 (Residues: 112-418; Coverage: 76%)
Gene names: CPA, CPA1
Sequence domains: Zinc carboxypeptidase
Structure domains: Zn peptidases
Carboxypeptidase A inhibitor Chain: B
Molecule details ›
Chain: B
Length: 65 amino acids
Theoretical weight: 7.5 KDa
Source organism: Ascaris suum
Expression system: Escherichia coli
UniProt:
  • Canonical: P19399 (Residues: 3-60, 61-65; Coverage: 97%)
Sequence domains: Metallo-carboxypeptidase inhibitor
Structure domains: Herpes Virus-1

Ligands and Environments

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID23-1
Spacegroup: P212121
Unit cell:
a: 55.47Å b: 78.7Å c: 84.5Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.158 0.157 0.2
Expression systems:
  • Komagataella pastoris
  • Escherichia coli