Predicted to enable SUMO binding activity and SUMO-specific isopeptidase activity. Acts upstream of or within blastocyst formation. Predicted to be located in nucleus. Predicted to be active in Cajal body. Is expressed in several structures, including early conceptus; metanephros; secondary oocyte; skeletal muscle; and spinal cord. Orthologous to human USPL1 (ubiquitin specific peptidase like 1). [provided by Alliance of Genome Resources, Apr 2022]