For 10 points, name this nucleoside attached tothree phosphate groups in ATP.
This chemical mediates hypoxia-induced AV nodal conduction delay and block. This compoundbuilds up in the brains of animals that are kept awake past normal times, which is why antagonists ofit, like caffeine, promote alertness. The lack of this compound's deaminase causes severe combinedimmunodeficiency because the deoxy form of this compound is toxic to lymphocytes. One substancethat contains this compound regulates the passage of (*) calcium ions through ion channels andactivates protein kinase A. That substance is also released when glycogen acts on receptors in the liver andis the monophosphorylated, cyclic form of this compound. For 10 points, name this nucleoside attached tothree phosphate groups in ATP.
This chemical mediates hypoxia-induced AV nodal conduction delay and block.
adenosine [do not accept "adenine"]