Guanosine 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-glycosidic bond. 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.
Guanine is an organic base of the purine family. When guanine attaches to the sugar ribose to form a glycosidic linkage, guanine forms its derivative guanosine. Guanosine is involved with the direct preservation and transfer of chemical energy in living systems. Guanosine is present in every cell in the human body. Guanosine is a purine, meaning that it is a single ring structure. A carbon sugar ring attaches to nitrogen in the base to form an N-glycosylic bond. The nitrogenous bases, which are primarily nonpolar, pack tightly enough to exclude water and form a stable, primarily nonpolar environment in the helix interior.
Guanosine is a nucleoside containing guanine. Guanosine differs from guanine in containing a sugar (ribose). Phosphorylation of guanosine produces a nucleotide found in RNA. Deoxyguanosine is a related nucleoside that contains deoxyribose instead of ribose as the sugar
Guanosine is a nucleoside that consists of guanine, an organic base belonging to the purine family, and the sugar ribose. Guanine, which may be responsible for the iridescence of the scales of some fish species, was found to be a component of bird guano in the first half of the nineteenth century and its structure was suggested as early as 1875. Similar to other nucleosides, one to three phosphoric acid groups may be added to guanosine to produce three nucleotides, including guanosine monophosphate (GMP), guanosine diphosphate (GDP), and guanosine triphosphate (GTP), which is the source of guanosine found in RNA. These nucleotides, as well as those formed from guanine and deoxyribose rather than ribose, carry out a number of significant functions in cellular metabolic processes.
Chemical Formula: C10H17N5O7
Other names: 2-Amino-1,9-dihydro-9-beta-D-ribofuranosyl-6H-purin-6-one