Predicted to enable ubiquitin protein ligase activity. Predicted to be involved in ubiquitin-dependent ERAD pathway. Predicted to be located in membrane. Predicted to be integral component of membrane. Predicted to be active in Golgi membrane and endoplasmic reticulum membrane. Is expressed in several structures, including alimentary system; brain; genitourinary system; hemolymphoid system gland; and liver and biliary system. Orthologous to human RNF121 (ring finger protein 121). [provided by Alliance of Genome Resources, Apr 2022]