[[(2R,3S,4R,5R)-5-(2-azanyl-6-oxidanylidene-1H-purin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methoxy-oxidanyl-phosphoryl] phosphono hydrogen phosphate

guanosine 5'-(tetrahydrogen triphosphate)

Proceedings of the National Academy of Sciences of the United States of America
Conformational control of small GTPases by AMPylation.