earticle

영어

Modification of nuclear and cytosolic proteins by O-linked N-acetylglucosamine (O-GlcNAc) is ubiquitous in cells. The in vivo function of the protein O-GlcNAcylation, however, is not well understood. Here, we genetically manipulated the cellular O-GlcNAcylation level in Drosophila and found that it promotes developmental growth by enhancing insulin signaling. This alteration of growth is due to cell growth and apoptosis and not to cell proliferation, and is mediated, at least in part, through O-GlcNAcylation of Akt. These results indicate that O-GlcNAcylation is one of the crucial mechanisms involved in control of insulin signaling in normal Drosophila development.