The molecule is a 1-(5-phospho-D-ribosyl)-ATP(6-) in which the 5-phospho-D-ribosyl residue has beta-configuration at the anomeric centre. It is a conjugate base of a 1-(5-phospho-beta-D-ribosyl)-ATP.
[(2R,3S,4R,5R)-5-[9-[(2R,3R,4S,5R)-3,4-dihydroxy-5-[[oxido-[oxido(phosphonatooxy)phosphoryl]oxyphosphoryl]oxymethyl]oxolan-2-yl]-6-iminopurin-1-yl]-3,4-dihydroxyoxolan-2-yl]methyl phosphate