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Question about Cell signaling

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CA2+, IP3, and cAMP have all been described as second messengers. In what ways are their mechanisms of action similar? In what ways are they different? If you were comparing the molecular structure of kinesin and dynein, which part (heads or tails) would you expect to be most similar between them? Why?

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Solution Summary

The solution analyzed CA2+, IP3, and cAMP's mechanisms and determines which actions are similar and which actions are different.

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This question can present itself to be quite engrossing with regard to the details you may get bogged down in. The focus should involve characteristic aspects for the Ca++, IP3, and cAMP second messengers:
Make specific distinctions regarding the three second messengers.
Calcium is an ion where-as cAMP is a biomolecule (protein) and a derivative of ATP (the bodies inherent energy source).
These second messengers and their method of actions can be dependent on their origin. For example G-protein coupled receptors can either activate (Gs-protein) or inhibit (Gi-protein) Adenylate cyclase. Adenylate cyclase is the enzyme catalyzing the reaction to form cAMP from ATP. This would differ from Ca++ as a second messenger which may act as a second messenger ...

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