The gluconeogenic enzyme PCK1 phosphorylates INSIG1/2 for lipogenesis.
Xu D, Wang Z, Xia Y, Shao F, Xia W, Wei Y, Li X, Qian X, Lee JH, Du L, Zheng Y, Lv G, Leu JS, Wang H, Xing D, Liang T, Hung MC, Lu Z.
Xu D, et al.
Nature. 2020 Apr;580(7804):530-535. doi: 10.1038/s41586-020-2183-2. Epub 2020 Apr 8.
Nature. 2020.
PMID: 32322062
Phosphorylated PCK1 translocates to the endoplasmic reticulum, where it uses GTP as a phosphate donor to phosphorylate INSIG1 at Ser207 and INSIG2 at Ser151. This phosphorylation reduces the binding of sterols to INSIG1 and INSIG2 and disrupts the interaction betwee …
Phosphorylated PCK1 translocates to the endoplasmic reticulum, where it uses GTP as a phosphate donor to phosphorylate INSIG1 at Ser2 …