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Regulation, with second messenger molecules

The second messenger molecules Ca2+ and cyclic AMP (cAMP) provide major routes for controlling cellular functions. In many instances, calcium (Ca2+) achieves its intracellular effects by binding to the receptor protein calmodulin. Calmodulin has the ability to associate with and modulate different proteins in a Ca2+-dependent and reversible manner. Calmodulin-dependent cyclic nucleotide phosphodiesterase (CaMPDE, EC 3.1.4.17) is one of the key enzymes involved in the complex interactions that occur between the cyclic-nucleotide and Ca2+ second messenger systems (see Figure 13.2). CaMPDE exists in different isozymic forms, which exhibit distinct molecular and catalytic properties. The differential expression and regulation of individual phosphodiesterase (PDE) isoenzymes in different tissues relates to their function in the body. [Pg.175]

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See also in sourсe #XX -- [ Pg.34 ]



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Messenger molecules

Messengers

Regulation, with second messenger

Second messenger molecules

Second messengers

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