Predicted to enable K63-linked polyubiquitin modification-dependent protein binding activity and ubiquitin-dependent protein binding activity. Predicted to be involved in interstrand cross-link repair and translesion synthesis. Predicted to act upstream of or within DNA repair. Predicted to be located in cell junction; chromosome; and nuclear body. Predicted to be part of Fanconi anaemia nuclear complex. Is expressed in several structures, including gonad; immune system; intestine; liver; and uterus. Orthologous to human FAAP20 (FA core complex associated protein 20). [provided by Alliance of Genome Resources, Apr 2022]