Enables eukaryotic initiation factor eIF2 binding activity and translation initiation factor activity. Involved in activation of GTPase activity and formation of translation preinitiation complex. Predicted to be located in cytoplasm and plasma membrane. Predicted to be active in cytosol. Orthologous to human EIF5 (eukaryotic translation initiation factor 5). [provided by Alliance of Genome Resources, Apr 2022]