Is predicted to encode a protein with the following domains: von Willebrand factor A-like domain superfamily; Ubiquitin interaction motif; von Willebrand factor type A domain; von Willebrand factor, type A; Ubiquitin interacting motif; and Proteasome subunit Rpn10. Is an ortholog of C. elegans rpn-10. In C. elegans, rpn-10 is involved in spermatogenesis and ubiquitin-dependent protein catabolic process.