May regulate muscle-specific transcription in the embryo and may regulate transcription of a variety of cell types in the adult. It binds to the sequence 5'-CTA[TA]4TAR-3'. Binds DNA as a multimer, probably as a dimer. Interacts with hdac9. Restricted to the somitic mesoderm of early embryos and to the body muscle (myotomes) of the tadpole. Expressed in all tissues examined in the adult. Expression begins in the late gastrula. Belongs to the MEF2 family.