CATH Classification

Domain Context

CATH Clusters

Superfamily Acid Proteases
Functional Family Pepsin A

Enzyme Information

3.4.23.4
Chymosin.
based on mapping to UniProt P00794
Broad specificity similar to that of pepsin A. Clots milk by cleavage of a single 104-Ser-Phe-|-Met-Ala-107 bond in kappa-chain of casein.
-!- Neonatal gastric enzyme with high milk clotting and weak general proteolytic activity, formed from prochymosin. -!- Found among mammals with postnatal uptake of immunoglobins. -!- Belongs to peptidase family A1. -!- Formerly EC 3.4.4.3.

UniProtKB Entries (1)

P00794
CHYM_BOVIN
Bos taurus
Chymosin

PDB Structure

PDB 1CMS
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
The three-dimensional structure of recombinant bovine chymosin at 2.3 A resolution.
Gilliland, G.L., Winborne, E.L., Nachman, J., Wlodawer, A.
Proteins