Is an ortholog of human CTSZ (cathepsin Z). Is predicted to have cysteine-type endopeptidase activity. Is involved in several processes, including animal organ development\; ecdysis, collagen and cuticulin-based cuticle\; and embryo development. Localizes to the collagen and cuticulin-based cuticle extracellular matrix. Is expressed in the alimentary system\; the epithelial system\; and the reproductive system.