PDBe 5er1

X-ray diffraction
2Å resolution

A rational approach to the design of antihypertensives. X-ray studies of complexes between aspartic proteinases and aminoalcohol renin inhibitors


Function and Biology Details

Reaction catalysed:
Hydrolysis of proteins with specificity similar to that of pepsin A, prefers hydrophobic residues at P1 and P1', but does not cleave 14-Ala-|-Leu-15 in the B chain of insulin or Z-Glu-Tyr. Clots milk. 
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Endothiapepsin Chain: E
Molecule details ›
Chain: E
Length: 330 amino acids
Theoretical weight: 33.81 KDa
Source organism: Cryphonectria parasitica
Expression system: Not provided
  • Canonical: P11838 (Residues: 90-419; Coverage: 83%)
Gene names: EAPA, EPN-1
Sequence domains: Eukaryotic aspartyl protease
Structure domains: Acid Proteases

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
Spacegroup: P21
Unit cell:
a: 53.5Å b: 73.9Å c: 45.7Å
α: 90° β: 109.6° γ: 90°
R R work R free
0.206 0.206 not available
Expression system: Not provided