Rnf40 - ring finger protein 40

Predicted to enable several functions, including enzyme binding activity; protein homodimerization activity; and syntaxin-1 binding activity. Involved in positive regulation of histone H2B ubiquitination. Predicted to be located in axon terminus; cytosol; and nucleoplasm. Predicted to be extrinsic component of membrane. Predicted to be part of HULC complex and ubiquitin ligase complex. Is expressed in genitourinary system and islets of Langerhans. Orthologous to human RNF40 (ring finger protein 40). [provided by Alliance of Genome Resources, Apr 2022]