CATH Classification

Domain Context

CATH Clusters

Superfamily Acid Proteases
Functional Family Endothiapepsin

Enzyme Information

3.4.23.20
Penicillopepsin.
based on mapping to UniProt P00798
Hydrolysis of proteins with broad specificity similar to that of pepsin A, preferring hydrophobic residues at P1 and P1', but also cleaving 20-Gly-|-Glu-21 in the B chain of insulin. Clots milk, and activates trypsinogen.
-!- From the imperfect fungus Penicillium janthinellum. -!- Closely related enzymes have been isolated from P.roqueforti and P.duponti. -!- Belongs to peptidase family A1. -!- Formerly EC 3.4.4.17, EC 3.4.23.6 and EC 3.4.23.7.

UniProtKB Entries (1)

P00798
PEPA1_PENJA
Penicillium janthinellum
Penicillopepsin-1

PDB Structure

PDB 2WEA
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Macrocyclic Inhibitors of Penicillopepsin. II. X-Ray Crystallographic Analyses of Penicillopepsin Complexed with a P3-P1 Macrocyclic Peptidyl Inhibitor and with its Two Acyclic Analogues
Ding, J., Fraser, M.E., Meyer, J.H., Bartlett, P.A., James, M.N.G.
J.Am.Chem.Soc.
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