2.4.2.17	1-(5-phospho-beta-D-ribosyl)-ATP + diphosphate	-	
2.4.2.17	ATP + 5-phospho-alpha-D-ribose 1-diphosphate	first step in histidine biosynthesis	
2.4.2.17	ATP + 5-phospho-alpha-D-ribose 1-diphosphate	first step in histidine biosynthesis, enzyme is regulated in a complex allosterical manner, it is a key enzyme is control of the metabolic flux through the pathway	
2.4.2.17	ATP + 5-phospho-alpha-D-ribose 1-diphosphate	first step in histidine biosynthesis, mechanism of regulation, overview	
2.4.2.17	ATP + 5-phospho-alpha-D-ribose 1-diphosphate	first enzyme in histidine biosynthetic pathway. ATP-PRT expression plays a major role in regulating the pool of free His and contributes to the exceptional Ni tolerance of hyperaccumulator Alyssum species	
2.4.2.17	ATP + 5-phospho-alpha-D-ribose 1-diphosphate	first reaction of histidine biosynthesis	
2.4.2.17	ATP + 5-phospho-alpha-D-ribose 1-diphosphate	-	
2.4.2.17	N1-(5-phospho-beta-D-ribosyl)-ATP + diphosphate	-