2f3c

X-ray diffraction
2.5Å resolution

Crystal structure of infestin 1, a Kazal-type serineprotease inhibitor, in complex with trypsin

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-133358 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Serine protease 1 Chain: E
Molecule details ›
Chain: E
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
Kazal-like domain-containing protein Chain: I
Molecule details ›
Chain: I
Length: 55 amino acids
Theoretical weight: 6.06 KDa
Source organism: Triatoma infestans
Expression system: Saccharomyces cerevisiae
UniProt:
  • Canonical: Q95P16 (Residues: 1-55; Coverage: 25%)
Sequence domains: Kazal-type serine protease inhibitor domain
Structure domains: Wheat Germ Agglutinin (Isolectin 2); domain 1

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: LNLS BEAMLINE D03B-MX1
Spacegroup: P212121
Unit cell:
a: 57.993Å b: 62.692Å c: 67.837Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.174 0.17 0.252
Expression system: Saccharomyces cerevisiae