Formulation: A solution in water
Formal Name: P′→P-anhydride with 5-(phosphonoamino)-1-naphthalenesulfonic acid guanosine 5′-(trihydrogen diphosphate), trisodium salt
Purity: ≥95%
Formula Markup: C20H20N6O16P3S • 3Na
Formula Weight: 794,4
Shelf life (days): 730
Notes: Guanosine-5'-O-triphosphoro-γ-1-(5-sulfonic acid)naphthylamidate (GTP-γ-AmNS) is a fluorescent derivative of GTP (Item No. 16060).{67442,67443} It has been used as a substrate for snake venom phosphodiesterases (PDEs) and to monitor tubulin assembly in cell-free assays. GTP-γ-AmNS diplays an emission maximum of 444 nm upon excitation at 320 nm, which is quenched by 1.2-1.4-fold upon cleavage of the α-β phosphoryl bond.{67442}