Is predicted to encode a protein with the following domains: WD40/YVTN repeat-like-containing domain superfamily; Quinoprotein alcohol dehydrogenase-like superfamily; Mono-functional DNA-alkylating methyl methanesulfonate N-term; and DNA damage-binding protein 1. Is an ortholog of C. elegans ddb-1. In C. elegans, ddb-1 is involved in proteasome-mediated ubiquitin-dependent protein catabolic process.