Wiktionary
gelatinase
n. (context enzyme English) Any of several proteolytic enzymes that catalyze the hydrolysis of gelatine
Wikipedia
Gelatinase
In biology and chemistry, gelatinase is a proteolytic enzyme that allows a living organism to hydrolyse gelatin into its sub-compounds ( polypeptides, peptides, and amino acids) that can cross the cell membrane and be used by the organism. It is not a pepsin.
Forms of gelatinases are expressed in several bacteria including Pseudomonas aeruginosa and Serratia marcescens.
In humans, the gelatinases are matrix metalloproteinases MMP2 and MMP9.
Gelatinase is secreted by the stomach.