Predicted to enable isopeptidase activity and metallopeptidase activity. Predicted to be involved in protein deneddylation. Part of COP9 signalosome. Is expressed in several structures, including central nervous system; liver; male reproductive system; sensory organ; and urinary system. Orthologous to human COPS6 (COP9 signalosome subunit 6). [provided by Alliance of Genome Resources, Apr 2022]