Enables eukaryotic initiation factor 4G binding activity. Involved in lung development. Part of eukaryotic translation initiation factor 4F complex. Is active in glutamatergic synapse and postsynaptic cytosol. Biomarker of vascular dementia. Human ortholog(s) of this gene implicated in autistic disorder. Orthologous to human EIF4E (eukaryotic translation initiation factor 4E). [provided by Alliance of Genome Resources, Apr 2022]