GTP -->
guanosine 5'-triphosphate
medical dictionary

An immediate precursor of guanine nucleotides in RNA; similar to ATP; has a crucial role in microtubule formation.

GTP cyclohydrolase, an enzyme that catalyses the reaction of GTP and H2O forming formate and a precursor of tetrahydrobiopterin; a deficiency of this enzyme will result in one form of malignant hyperphenylalaninaemia.

Acronym: GTP

(05 Mar 2000)