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Additional
guanosine
English Wikipedia - The Free Encyclopedia
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Guanosine
Guanosine
is a
purine
nucleoside
comprising
guanine
attached to a
ribose
(
ribofuranose
) ring via a ß-N
9
-
glycosidic bond
. Guanosine can be
phosphorylated
to become
guanosine monophosphate
(GMP),
cyclic guanosine monophosphate
(cGMP),
guanosine diphosphate
(GDP), and
guanosine triphosphate
(GTP). These forms play important roles in various biochemical processes such as synthesis of
nucleic acids
and proteins,
photosynthesis
, muscle contraction, and intracellular signal transduction (cGMP). When guanine is attached by its N9 nitrogen to the C1 carbon of a
deoxyribose
ring it is known as
deoxyguanosine
.
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