[[(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.

Rab1b bound to GTP (Phosphocholination at S76)

Rab1b bound to GDP (Phosphocholination at S76)