Knowra Guanosine triphosphate Guanosine triphosphate Guanosine triphosphate (GTP) is a nucleotide composed of guanine, ribose, and three phosphate groups. Cells use it as an energy source and as a molecular switch in signaling and protein synthesis.
GTP hydrolysis : The reaction that converts GTP to GDP and inorganic phosphate, releasing free energy. This reaction supplies energy and drives conformational changes in GTP-dependent proteins.
Translation (biology) : The cellular process that uses ribosomes to synthesize proteins from messenger RNA. Ribosomes and translation factors use GTP at several steps of protein synthesis.
Nucleotide : A molecule consisting of a nitrogenous base, a sugar, and one or more phosphate groups. GTP is one specific nucleotide, distinguished by guanine and three phosphates.
Adenosine triphosphate : Adenosine triphosphate (ATP) is an adenine-containing nucleotide that serves as a major cellular energy carrier. ATP is the more abundant general energy currency, while GTP has specialized roles in signaling and translation.
GTP depletion : A reduction in the cellular pool of guanosine triphosphate available for biochemical reactions. Low GTP can constrain RNA synthesis, translation, and GTPase-dependent signaling.
GTPase : An enzyme or protein domain that hydrolyzes guanosine triphosphate to guanosine diphosphate. GTPases control when GTP is hydrolyzed, setting the duration of molecular switches.
Protein synthesis : The cellular production of proteins through transcription and translation. GTP supports translation, including aminoacyl-tRNA delivery and ribosome movement.
Guanine : A purine nucleobase found in DNA, RNA, and guanine-containing nucleotides. Guanine is the base that gives GTP its identity and pairing properties.
Cytidine triphosphate : A cytosine-containing nucleotide with three phosphate groups, used in RNA synthesis and lipid metabolism. CTP is another cellular nucleoside triphosphate with distinct biosynthetic uses.
Ribosome : A ribonucleoprotein complex that translates messenger RNA into proteins. GTP consumption helps coordinate accurate decoding and movement of the ribosome.
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