Protein involved in Ub-proteasome dependent catabolism; interacts with Cdc48p and the proteasome, protecting cells from arsenite-induced proteotoxicity through stress granule (SG) clearance; contains a PACE promoter element; co-regulated with proteasome subunit genes; contains an AN1-type zinc finger, a DHHC domain and a UBL fold; complements SG clearance in arsenite treated HeLa cells depleted of ZFAND1, a human ortholog linked to cancer; protein abundance increases under DNA replication stress