Predicted to enable K63-linked polyubiquitin modification-dependent protein binding activity; pre-mRNA intronic binding activity; and snRNA binding activity. Involved in cellular response to lipopolysaccharide and cellular response to tumor necrosis factor. Part of small nuclear ribonucleoprotein complex. Human ortholog(s) of this gene implicated in retinitis pigmentosa and retinitis pigmentosa 13. Orthologous to human PRPF8 (pre-mRNA processing factor 8). [provided by Alliance of Genome Resources, Apr 2022]