Translational regulator that ensures constant high levels of translation under amino acid starvation. Plays a role as a negative regulator of the gcn-2 kinase activity; impairs gcn-1-mediated gcn-2 activation, and hence gcn-2-mediated eIF-2-alpha phosphorylation and subsequent down-regulation of protein synthesis in amino acid-starved cells. Plays a role in differentiation of neuronal cells by stimulating neurite outgrowth. Interacts with gcn-1; prevents the interaction of gcn-1 with gcn-2 and inhibits gcn-2 kinase activity. Interaction with rpl-39; this interaction occurs in a gcn-1-independent manner. Associates with ribosomes; this interaction occurs in a gcn-1-independent manner. Associates with actin; this interaction occurs in a gcn-1-independent manner. Belongs to the IMPACT family.