2abz

X-ray diffraction
2.16Å resolution

Crystal structure of C19A/C43A mutant of leech carboxypeptidase inhibitor in complex with bovine carboxypeptidase A

Released:

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.
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero hexamer (preferred)
PDBe Complex ID:
PDB-CPX-133049 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Carboxypeptidase A1 Chains: A, B
Molecule details ›
Chains: A, B
Length: 309 amino acids
Theoretical weight: 34.72 KDa
Source organism: Bos taurus
Expression system: Komagataella pastoris
UniProt:
  • Canonical: P00730 (Residues: 111-419; Coverage: 77%)
Gene names: CPA, CPA1
Sequence domains: Zinc carboxypeptidase
Structure domains: Zn peptidases
Metallocarboxypeptidase inhibitor Chains: C, D, E, F
Molecule details ›
Chains: C, D, E, F
Length: 67 amino acids
Theoretical weight: 7.33 KDa
Source organism: Hirudo medicinalis
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P81511 (Residues: 16-81; Coverage: 100%)
Structure domains: Carboxypeptidase inhibitor

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
Spacegroup: P43212
Unit cell:
a: 124.93Å b: 124.93Å c: 154.98Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.192 0.189 0.234
Expression systems:
  • Komagataella pastoris
  • Escherichia coli BL21(DE3)