Is predicted to encode a protein with the following domains: Ubiquitin-like domain superfamily; Rad60/SUMO-like domain; Ubiquitin-2 like Rad60 SUMO-like; and Ubiquitin-like domain. Is an ortholog of C. elegans smo-1. In C. elegans, smo-1 is involved in several processes, including chromosome organization; multicellular organismal locomotion; and muscle cell cellular homeostasis.