In a Phosphorylation Cascade Phosphorylate Proteins?

A phosphorylation cascade is a sequence of signaling pathway events where one enzyme phosphorylates another, causing a chain reaction leading to the phosphorylation of thousands of proteins. This can be seen in signal transduction of hormone messages.

How are proteins in a phosphorylation cascade activated?

For example, phosphorylation is activated by stimuli such as epigenetic modifications, cytogenetic alterations, genetic mutations or the tumor micro-environment. Consequently, the protein receives a phosphate group by adenosine triphosphate (ATP) hydrolysis and due to enzymatic activity of kinase.

What receptor protein initiates a phosphorylation cascade?

It was shown that by binding to its receptor, leptin initiates a phosphorylation cascade via the tyrosine-protein kinase JAK/signal transducer and activator of transcription 3 (STAT3) pathway and then phosphorylates and activates AMPK and proliferator-activated receptor peroxisome gamma coactivator-1-alpha (PGC-1α) [81 ...