Predicted to enable ubiquitin conjugating enzyme binding activity and ubiquitin protein ligase activity. Predicted to be involved in cellular protein metabolic process and regulation of protein catabolic process. Predicted to be located in postsynapse. Predicted to be integral component of membrane. Predicted to be part of ubiquitin ligase complex. Predicted to be active in cytoplasm; glutamatergic synapse; and hippocampal mossy fiber to CA3 synapse. Orthologous to human RNF19A (ring finger protein 19A, RBR E3 ubiquitin protein ligase). [provided by Alliance of Genome Resources, Apr 2022]