Predicted to enable transcription coactivator activity. Predicted to be involved in positive regulation of DNA-templated transcription and regulation of transcription by RNA polymerase II. Predicted to act upstream of or within chromatin organization. Predicted to be located in nucleus. Predicted to be part of DUBm complex and SAGA complex. Orthologous to human ATXN7L3 (ataxin 7 like 3).