16409-13-5

Formycin triphosphate is a fluorescent analogue of ATP which on binding to enzyme active sites exhibits enhanced fluorescence. Formycin triphosphate is an ATP-competitive chicken liver pyruvate carboxylase inhibitor. Formycin triphosphate potentiates atrial natriuretic factor (ANF)-stimulated guanylate cyclase activity with an EC50 at about 90 μM and inhibits ATP-stimulated guanylate cyclase activity with an IC50 at about 100 μM[1][2].

[1] P V Attwood, et al. Interaction of formycin A-5'-triphosphate with pyruvate carboxylase. FEBS Lett. 1984 Sep 17;175(1):45-50. DOI:10.1016/0014-5793(84)80566-9
[2] C H Chang, et al. Formycin triphosphate as a probe for the ATP binding site involved in the activation of guanylate cyclase. Eur J Pharmacol. 1992 Oct 1;227(2):229-31. DOI:10.1016/0922-4106(92)90133-g