Process for the preparation of protease inhibitors

The invention relates to DNA sequences which code an eglin, expression plasmids containing such DNA sequences, hosts transformed with such expression plasmids, novel eglin compounds produced from such transformed hosts, monoclonal antibodies against eglins, hybridoma cells which produce such antibodies, and test kits for immunoassays containing such antibodies, and furthermore the processes for their preparation and a process for the preparation of eglins with the aid of the transformed hosts. The eglins which can be prepared according to the invention have useful pharmacological properties.