The glycosyltransferase ALG3 is an AKT substrate that regulates protein N-glycosylation.

ABSTRACT: AKT phosphorylates the glycosyltransferase ALG3. The PI3K/AKT signaling pathway is frequently dysregulated in cancer and controls key cellular processes such as survival, proliferation, metabolism, and growth. Protein glycosylation is essential for proper protein folding and is also often deregulated in cancer. Cancer cells depend on increased protein folding to sustain oncogene-driven proliferation rates. The N-glycosyltransferase asparagine-linked glycosylation 3 homolog (ALG3), a rate-limiting enzyme during glycan biosynthesis, catalyzes the addition of the first mannose to glycans in an alpha-1,3 linkage. Here we show that ALG3 is phosphorylated downstream of the PI3K/AKT pathway in both growth factor-stimulated cells and PI3K/AKT-hyperactive cancer cells. AKT directly phosphorylates A

SUBMITTER: Navarro-Traxler AJ 

PROVIDER: S-EPMC12451169 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature