hydatidosis is a zoonosis disease caused by the larva of echinococcus granulosus parasite in man and animals. the proteases enzymes are necessary for nutrition, migration and evasion of immunity of parasite into host. the aim of this study was to determine the protease activity of hydatid cyst protoscolices (psc), healthy and cystic liver tissues in order to compare of this biomarker for host a...

Recombinant human immunodeficiency virus 1 (HIV-1) protease, purified from a bacterial expression system, processed a recombinant form of its natural substrate, Pr55gag, into protein fragments that possess molecular weights commensurate with those of the virion gag proteins. Molecular weights of the protease obtained under denaturing and nondenaturing conditions (11,000 and 22,000, respectively...

The present paper describes chemical and functional properties of protease nexin, a serine protease inhibitor released from cultured human fibroblasts. It is shown that protease nexin is actually synthesized by fibroblasts and represents about 1% of their secreted protein. Analysis of the amino acid composition of purified protease nexin indicates that it is evolutionarily related to antithromb...