Predicted to enable enzyme binding activity; macrophage migration inhibitory factor binding activity; and peptidase activity. Predicted to be involved in several processes, including protein modification by small protein removal; regulation of cellular response to stress; and regulation of transcription, DNA-templated. Predicted to act upstream of or within regulation of cell cycle. Predicted to be located in several cellular components, including nucleoplasm; perinuclear region of cytoplasm; and synaptic vesicle. Predicted to be part of COP9 signalosome. Predicted to be active in cytoplasm. Predicted to colocalize with chromatin. Orthologous to human COPS5 (COP9 signalosome subunit 5). [provided by Alliance of Genome Resources, Apr 2022]