Predicted to enable DNA-binding transcription repressor activity, RNA polymerase II-specific; RNA polymerase II cis-regulatory region sequence-specific DNA binding activity; and mRNA binding activity. Predicted to be involved in myotube differentiation; neuron differentiation; and regulation of RNA metabolic process. Predicted to be part of post-mRNA release spliceosomal complex. Predicted to be active in cytoplasm and nucleus. Orthologous to human MYEF2 (myelin expression factor 2). [provided by Alliance of Genome Resources, Apr 2022]