Predicted to enable translation initiation factor activity. Predicted to contribute to guanyl-nucleotide exchange factor activity. Involved in cellular response to hypoxia. Predicted to be part of eukaryotic translation initiation factor 2B complex. Is expressed in adult head. Human ortholog(s) of this gene implicated in leukoencephalopathy with vanishing white matter and leukoencephalopathy with vanishing white matter 2. Orthologous to human EIF2B2 (eukaryotic translation initiation factor 2B subunit beta).