› 1p2k

X-ray diffraction
1.6Å resolution

Structural consequences of accommodation of four non-cognate amino-acid residues in the S1 pocket of bovine trypsin and chymotrypsin

Released:
DOI: 10.2210/pdb1p2k/pdb
PDB entry 1p2k coloured by chain, front view.
PDB entry 1p2k coloured by chain, side view.
PDB entry 1p2k coloured by chain, top view.
Source organism: Bos taurus
Primary publication:
Structural consequences of accommodation of four non-cognate amino acid residues in the S1 pocket of bovine trypsin and chymotrypsin.
Helland R, Czapinska H, Leiros I, Olufsen M, Otlewski J, Smalås AO
J Mol Biol 333 845-61 (2003)
PMID: 14568540

Function and Biology Details

Reaction catalysed: 
Preferential cleavage: Arg-|-, Lys-|-.
Biochemical function:
Biological process:
Cellular component:
Sequence domains:
Structure domains:

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-133321 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Serine protease 1 Chain: A
Molecule details ›
Chain: A
Length: 223 amino acids
Theoretical weight: 23.32 KDa
Source organism: Bos taurus
UniProt:
  • Canonical: P00760 (Residues: 24-246; Coverage: 97%)
Gene names: PRSS1, TRP1, TRY1, TRYP1
Sequence domains: Trypsin
Structure domains: Trypsin-like serine proteases
Pancreatic trypsin inhibitor Chain: I
Molecule details ›
Chain: I
Length: 58 amino acids
Theoretical weight: 6.48 KDa
Source organism: Bos taurus
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P00974 (Residues: 36-93; Coverage: 73%)
Sequence domains: Kunitz/Bovine pancreatic trypsin inhibitor domain
Structure domains: Pancreatic trypsin inhibitor Kunitz domain

Ligands and Environments

2 bound ligands:
Ligand CA 1 x CA
Ligand SO4 2 x SO4
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE BM1A
Spacegroup: I222
Unit cell:
a: 74.63Å b: 82.49Å c: 123.3Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.2 0.2 0.212
Expression system: Escherichia coli BL21(DE3)

Quick links

Citations

1 review citation

The many faces of protease-protein inhibitor interaction.
Otlewski et al. (2005)
11 other articles