|
ATP is used in signalling. I know its used as an extracellular signalling molecule but im sure its involved in modulating 2o messengers as well.
Also, its the cyclic nucleotide derivative cAMP is probably the most commonly occuring 2o messenger used. (just look at olfaction etc for examples)
finding a reason why one nucleotide is used rather than another is quite an intereasting question really. Also, remember that there is more phospho nucleotides. I wonder if their slightly different chemistry defines what particular roles they have in the cell.
Sorry, thats more random musing than it is answer to your question, its a bit early.
Adam
__________________
Biochemistry Liverpool 2008
Medicine HYMS 2013
"Rid yourself of your arrogance and your lustfulness, your ingratiating manners and your excessive ambition. These are all detrimental to your person. This is all I have to say to you"
-Lao Tsu
|