SIK2 Antibody – Rabbit Polyclonal

QIK: a serine/threonine kinase of the CAMKL family and related to AMPK. Specifically expressed in adipose tissues. Like AMPK, QIK is phosphorylated and activated by LKB1. Part of a molecular complex including TORC2 and calcineurin that regulates the effects of circulating glucose and gut hormones during feeding on TORC2-mediated gene expression. In mice, insulin promotes the phosphorylation and ubiquitin-dependent degradation of TORC2, inhibiting gluconeogenic gene expression during re-feeding. In response to insulin, Akt2 phosphorylates and activates QIK which in turn stimulates the phosphorylation and cytoplasmic translocation of TORC2 where it associates with COP1, which promotes its ubiquitination and proteasomal degradation. Phosphorylates Ser794 of IRS1 in insulin-stimulated adipocytes, potentially modulating the efficiency of insulin signal transduction. Inhibits CREB activity by phosphorylating and repressing the CREB-specific coactivators, CRTC1-3.

Protein type: EC 2.7.11.1; Protein kinase, Ser/Thr (non-receptor); Kinase, protein; Protein kinase, CAMK; CAMK group; CAMKL family; QIK subfamily

Chromosomal Location of Human Ortholog: 11q23.1

Cellular Component: cytoplasm; nucleus

Molecular Function: protein serine/threonine kinase activity; protein binding; magnesium ion binding; ATP binding

Biological Process: regulation of insulin receptor signaling pathway; protein amino acid autophosphorylation; insulin receptor signaling pathway; protein amino acid phosphorylation