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Description

Cells respond to their environment in various ways through intracellular signaling. Signaling through Receptor Tyrosine kinases (RTKs) often promotes increased metabolism and cell growth. Activation of ERK/MAP kinase is one of the key serine/threonine kinases activated via RTK signaling, promoting increased activity of p70 S6 kinase, MSK1, STATs, CREB, and many other signaling intermediates. Other signaling pathways induced via stress (ex. heat shock/arsenite treatment) or death receptors (ex. TNFalpha) promote p38, JNK, and p53 signaling pathways.