20kb genomic fragment (coordinates 3R:31390122..31410205 , derived from the CH322-20H13 BAC clone) that encompasses Gcn2.
Gcn2+tCH322-20H13;Df(3R)Gcn2-FRT12kb/Df(3R)Gcn2-FRT12kb rescue flies display, similarly to wild-type, adult lifespan extension when kept on a low-protein diet.