2pka

X-ray diffraction
2.05Å resolution

REFINED 2 ANGSTROMS X-RAY CRYSTAL STRUCTURE OF PORCINE PANCREATIC KALLIKREIN A, A SPECIFIC TRYPSIN-LIKE SERINE PROTEINASE. CRYSTALLIZATION, STRUCTURE DETERMINATION, CRYSTALLOGRAPHIC REFINEMENT, STRUCTURE AND ITS COMPARISON WITH BOVINE TRYPSIN

Released:

Function and Biology Details

Reaction catalysed:
Preferential cleavage of Arg-|- bonds in small molecule substrates. Highly selective action to release kallidin (lysyl-bradykinin) from kininogen involves hydrolysis of Met-|- or Leu-|-. The rat enzyme is unusual in liberating bradykinin directly from autologous kininogens by cleavage at two Arg-|- bonds (5).
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assemblies composition:
hetero dimer (preferred)
hetero tetramer
Assembly name:
PDBe Complex ID:
PDB-CPX-133312 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Glandular kallikrein Chains: A, X
Molecule details ›
Chains: A, X
Length: 80 amino acids
Theoretical weight: 9.12 KDa
Source organism: Sus scrofa
Expression system: Not provided
UniProt:
  • Canonical: P00752 (Residues: 8-87; Coverage: 33%)
Sequence domains: Trypsin
Structure domains: Trypsin-like serine proteases
Glandular kallikrein Chains: B, Y
Molecule details ›
Chains: B, Y
Length: 152 amino acids
Theoretical weight: 16.51 KDa
Source organism: Sus scrofa
Expression system: Not provided
UniProt:
  • Canonical: P00752 (Residues: 95-148, 150-170, 172-174, 176-246; Coverage: 61%)
Sequence domains: Trypsin
Structure domains: Trypsin-like serine proteases

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
Spacegroup: P41212
Unit cell:
a: 90.2Å b: 90.2Å c: 159.4Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.22 0.22 not available
Expression system: Not provided