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cestrela7 [59]
3 years ago
5

Many second messenger systems activate ________, enzymes that transfer a phosphate group from ATP to a protein. The phosphorylat

ion of proteins sets off a series of intracellular events that lead to the ultimate cellular response
Biology
1 answer:
Aleks [24]3 years ago
6 0

Answer:

Many second messenger systems activate kinases, enzymes that transfer a phosphate group from ATP to a protein. The phosphorylation of proteins sets off a series of intracellular events that lead to the ultimate cellular response.

Explanation:

For example, the second messenger cAMP activates the protein kinase A (PKA), which catalyzes the phosphorylation of other proteins.

The second messenger Ca²⁺ forms an active complex with a protein called calmodulin. This complex activates CaM kinases, that phosphorylate a group of target proteins, regulating its activities.

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