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a highly active, crystallizable endopeptidase from the sap of fig trees, which catalyzes the hydrolysis of many proteins at acid (4.1) pH.
1. A cysteine endopeptidase isolated from figs (Ficus carica, F. globata, and F. doliaria); used in industry as a protein digestant; ficin has a wide specificity for protein substrates; an anthelmintic.
2. The crude dried latex from Ficus spp. Synonym(s): ficain
ficin/fi·cin/ (fi´sin) ficain.
a highly active, crystallizable proteinase from the sap of fig trees, which catalyzes the hydrolysis of many proteins at acid (4.1) pH, the clotting of milk, and digestion of some living worms, e.g. whipworms. Ficin is used as a protein digestant and to enhance the agglutination of red blood cells by IgG. It also shows esterase activity.