Contributes to translation initiation factor activity. Involved in formation of cytoplasmic translation initiation complex. Part of eukaryotic translation initiation factor 3 complex, eIF3m. Is active in postsynaptic density. Is expressed in central nervous system; retina; and testis. Orthologous to human EIF3A (eukaryotic translation initiation factor 3 subunit A). [provided by Alliance of Genome Resources, Apr 2022]