only in taxon only_in_taxon Metazoa eukaryotic protein cathepsin-like protease fam:CTS PR:000040662 A protein that is a translation product of some metazoan gene that encodes a signal peptide followed by a single Cathepsin propeptide inhibitor domain (Pfam:PF08246) followed by a single Papain family cysteine protease (Pfam:PF00112) domain at the C terminus. Category=family. cathepsin protein