Cyclic AMP is a form of adenylic acid responsible for regulating enzyme-catalyzed processes in living cells while PIP2 calcium is a membrane phospholipid.
because original message is carried by hormone, which cant act directly, so in turn it activates cyclic AMP.
No, calcium bonds to calmodulin
"When adenylyl cyclase is activated, it catalyses the conversion of ATP to cyclic AMP, which leads to an increase in intracellular levels of cyclic AMP. Cyclic AMP functions as a "http://wiki.answers.com/../pathphys/endocrine/moaction/surface.html" to relay extracellular signals to intracellular effectors, particularly http://wiki.answers.com/pka.html. "
It is a secondary signaling molecule.
Cyclic AMP Receptor Protein
G. Alan Robison has written: 'Cyclic AMP' -- subject(s): Cyclic adenylic acid
yes
Second Messengers
Cyclic AMP accumulates when the glucose concentration is scarce. If the glucose concentration increases, the cAMP concentration falls, and without it, CAP (catabolite activator portein) detaches from the operon and becomes inactive.
Cyclic AMP and calcium may be second messengers
Calcium