Predicted to enable cysteine-type endopeptidase inhibitor activity. Predicted to be involved in negative regulation of endopeptidase activity. Predicted to act upstream of or within epidermis development. Predicted to be located in cornified envelope. Human ortholog(s) of this gene implicated in ectodermal dysplasia 15. Orthologous to human CST6 (cystatin E/M). [provided by Alliance of Genome Resources, Apr 2022]