A nucleotide that is a precursor in RNA synthesis and also plays a special role in protein synthesis, signal-transduction pathways, and microtubule assembly.
(Guanosine triphosphate) An energy-rich nucleotide analogous to ATP that is composed of guanine, ribose, and three phosphate groups and is necessary for peptide-bond formation during protein synthesis.
guanosine triposphate, a high-energy molecule required for a number of biochemical reactions, including nucleic acid and protein synthesis (formation); it is incorporated into the RNA chain during synthesis of RNA.
an energy-rich molecule analogous to ATP that is required for the synthesis of all peptide bonds during translation