Enteropeptidase is a type II transmembrane serine protease (TTSP) localized to the brush border of the duodenal and jejunal mucosa and synthesized as a zymogen, proenteropeptidase, which requires activation by duodenase or trypsin [REF].
In the case of cattle enteropeptidase the primary translation product comprises 1035 residues with an expected mass of 114.9kDa [REF].