Enables protein domain specific binding activity. Involved in dorsal/ventral axis specification; negative regulation of protein binding activity; and positive regulation of protein phosphorylation. Predicted to be located in cytoplasmic vesicle; cytosol; and nuclear body. Predicted to be part of nuclear pore. Predicted to be active in nucleus. Predicted to colocalize with PML body. Orthologous to human SENP2 (SUMO specific peptidase 2). [provided by Alliance of Genome Resources, Apr 2022]