Guanosine
Guanosine
Guanosine (pronounced gwa-no-seen) is a purine nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a β-N-glycosidic bond. Guanosine can be phosphorylated to become Guanosine monophosphate, Guanosine diphosphate, and Guanosine triphosphate. It is also a component of RNA and plays a significant role in biochemical processes like translation and transcription.
Etymology
The term "Guanosine" is derived from the word "guanine", which in turn is named after "guano", the term for bird droppings that were originally the commercial source of the compound. The "-osine" suffix indicates that the compound is a nucleoside, a nucleotide without the phosphate group.
Related Terms
- Guanine: One of the four main nucleobases found in the nucleic acids DNA and RNA.
- Nucleoside: A structural subunit of nucleic acids, composed of a sugar and one of several types of nitrogenous bases.
- Nucleotide: A compound consisting of a nucleoside linked to a phosphate group, the basic structural unit of nucleic acids such as DNA and RNA.
- Ribose: A sugar of the pentose class which occurs widely in nature as a constituent of nucleosides and several vitamins and enzymes.
- RNA (Ribonucleic Acid): A nucleic acid present in all living cells, its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins.
External links
- Medical encyclopedia article on Guanosine
- Wikipedia's article - Guanosine
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