Predicted to enable endopeptidase activity. Predicted to be involved in proteasomal protein catabolic process. Predicted to act upstream of or within proteasome-mediated ubiquitin-dependent protein catabolic process and response to oxidative stress. Predicted to be located in centrosome and nucleoplasm. Predicted to be part of proteasome core complex, beta-subunit complex. Predicted to be active in nucleus. Orthologous to human PSMB5 (proteasome 20S subunit beta 5). [provided by Alliance of Genome Resources, Apr 2022]