is a molecule
(known as a nucleoside
) that is formed when guanine
is attached to a ribose
ring (also known as a ribofuranose
) via a β-N9
Guanosine can be phosphorylated to become GDP (guanosine diphosphate) and GTP (guanosine triphosphate) among other things.
If guanine is attached to a deoxyribose ring, it
is known as a deoxyguanosine.