Why are signaling pathways regulated? - TimesMojo

SOLVED:Two protein kinases, K 1 and K 2, function sequentially in an intracellular signaling pathway. If either kinase contains a mutation that permanently inactivates its function, no response is seen in cells when an extracellular signal is received. A different mutation in K 1 makes it permanently active, so that in cells containing that mutation a response is observed even in the absence of an extracellular signal. You characterize a double-mutant cell that contains K 2 with the inactivating

Cell Signaling in Plants

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Allosteric Regulation | Activation, Inhibition & Examples

signal transduction pathways regulate a range of responses in cells the mitogen activated protein map kinase cascade triggered by receptor tyrosine kinases rtks results in cell division pred 18045

SOLVED: A scientist notices that a cancer cell line shows high levels of phosphorylated ERK in the absence of EGF. What are two possible explanations for the increase in phosphorylated ERK? Be specific in which proteins are involved.