8-Azidoadenosine 5'-triphosphate, sodium salt

8-Azido-ATP, a photoreactable nucleotide analog, is useful for the identification of proteins, such as DNA-dependent RNA polymerase[1]. 8-Azido-ATP is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.

[1] S Valenzuela, et al. Photoaffinity labeling of rotavirus VP1 with 8-azido-ATP: identification of the viral RNA polymerase. J Virol. 1991 Jul;65(7):3964-7. DOI:10.1128/JVI.65.7.3964-3967.1991
[2] K Tanabe, et al. Direct photoaffinity labeling of the Kir6.2 subunit of the ATP-sensitive K+ channel by 8-azido-ATP. J Biol Chem. 1999 Feb 12;274(7):3931-3. DOI:10.1074/jbc.274.7.3931