Predicted to enable K63-linked polyubiquitin modification-dependent protein binding activity; histone binding activity; and retinoid X receptor binding activity. Predicted to be involved in several processes, including histone H2A K63-linked deubiquitination; mitotic G2 DNA damage checkpoint signaling; and regulation of nucleobase-containing compound metabolic process. Predicted to be located in nuclear body. Predicted to be part of BRCA1-A complex. Orthologous to human UIMC1 (ubiquitin interaction motif containing 1). [provided by Alliance of Genome Resources, Apr 2022]