Definition: An enzyme that catalyzes the first step of the pathway for histidine biosynthesis in Salmonella typhimurium. ATP reacts reversibly with 5-phosphoribosyl-1-pyrophosphate to yield N-1-(5'-phosphoribosyl)-ATP and pyrophosphate. EC 2.4.2.17.
Other names Phosphoribosyl-ATP Pyrophosphorylase; Pyrophosphorylase, Phosphoribosyl-ATP; Phosphoribosyltransferase, ATP; Phosphoribosyl ATP Pyrophosphorylase