Predicted to enable guanyl-nucleotide exchange factor activity; translation initiation factor activity; and translation initiation factor binding activity. Predicted to be involved in several processes, including T cell receptor signaling pathway; glial cell development; and translational initiation. Predicted to act upstream of or within translation. Located in cytoplasm and nucleus. Is expressed in central nervous system and retina. Used to study leukoencephalopathy with vanishing white matter. Human ortholog(s) of this gene implicated in leukoencephalopathy with vanishing white matter. Orthologous to human EIF2B5 (eukaryotic translation initiation factor 2B subunit epsilon). [provided by Alliance of Genome Resources, Apr 2022]