Guanosine-5`-triphosphate (GTP) is a purine nucleoside triphosphate. It can act as a substrate for the synthesis of RNA during the transcription process or DNA during DNA replication. Its structure is similar to that of the guanine nucleobase, the only difference being that nucleotides like GTP have a ribose sugar and three phosphates, with the n....
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http://en.wikipedia.org/wiki/Guanosine_triphosphate
(from the article `guanine`) Guanosine triphosphate (GTP) is used by the body to form the guanylic acid units in ribonucleic acids (RNA`s).If guanosine triphosphate (GTP) forms, ATP can readily arise from it in an exchange involving ADP [43a]:[2 related articles]
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http://www.britannica.com/eb/a-z/g/77
A molecule which consists of the nitrogenous base guanine linked to the sugar ribose and which has three phosphate groups attached to the 5th carbom atom of the ribose. GTP is a high-energy compound which serves as an energy source for many biochemical reactions. It is required for the formation of peptide bonds between amino acids during translati...
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http://www.encyclo.co.uk/local/20973
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