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