Predicted to enable metallopeptidase activity; polyubiquitin modification-dependent protein binding activity; and thiol-dependent deubiquitinase. Predicted to be involved in double-strand break repair and histone H2A K63-linked deubiquitination. Predicted to act upstream of or within proteolysis. Predicted to be part of BRCA1-A complex and BRISC complex. Orthologous to human BRCC3 (BRCA1/BRCA2-containing complex subunit 3). [provided by Alliance of Genome Resources, Apr 2022]