Predicted to enable ubiquitin protein ligase binding activity. Predicted to be involved in negative regulation of transcription by RNA polymerase II. Predicted to be located in cytosol and nucleoplasm. Predicted to be active in nucleus. Is expressed in cranial ganglion and lung. Orthologous to human MAGEC1 (MAGE family member C1) and MAGEC2 (MAGE family member C2).