Acts downstream of PI3 kinase age-1 and kinase pdk-1 in the daf-2/insulin receptor-like transduction pathway. Phosphorylates Forkhead-related daf-16 and the longevity-promoting skn-1 transcription factors, which inhibits their entry into the nucleus and antagonizes their functions (PubMed:9716402, PubMed:11747825, PubMed:11381260, PubMed:15068796, PubMed:18358814). Has an essential role in regulating developmental arrest at the dauer stage (PubMed:10364160). Plays a role in immune function and pathogen resistance (PubMed:18782349). Regulates salt chemotaxis learning (PubMed:16950159, PubMed:30779740). Downstream of age-1 and together with akt-2 and sgk-1, promotes cell survival during embryonic development (PubMed:25383666). ATP + L-seryl-[protein] = ADP + H(+) + O-phospho-L-seryl-[protein] ATP + L-threonyl-[protein] = ADP + H(+) + O-phospho-L-threonyl-[protein] Phosphorylated and activated by pdk-1. Interacts with pdk-1, sgk-1, akt-2 and daf-16 (PubMed:15068796). Part of a complex containing sgk-1, akt-1 and akt-2 (PubMed:15068796). Interacts with cmd-1 in the presence of Ca(2+) (PubMed:17854888). Interacts with let-92 phosphatase regulatory subunit pptr-1 (PubMed:19249087). Expressed in neurons, muscle cells of the pharynx, rectal gland cells, vulva and spermatheca. Expressed in late stage embryos and throughout life. The PH domain binds to phosphatidylinositol 3,4,5-trisphosphate (PtdIns(3,4,5)P3) resulting in its targeting to the plasma membrane. Increased resistance to pathogens. Simultaneous knockdown of akt-1 and akt-2 result in dauer formation and a weak extension to life span. Belongs to the protein kinase superfamily. AGC Ser/Thr protein kinase family. RAC subfamily.