2.7.3.9	phosphoenolpyruvate + protein histidine = pyruvate + protein N-pros-phosphohistidine	-	-	
2.7.3.9	phosphoenolpyruvate + protein histidine = pyruvate + protein Npi-phospho-L-histidine	bi-bi ping-pong mechanism	642508, 642509	
2.7.3.9	phosphoenolpyruvate + protein histidine = pyruvate + protein Npi-phospho-L-histidine	enzyme I of the phosphotransferase system (cf. EC 2.7.1.69 protein-N’-phosphohistidine-sugar phosphotransferase), acts only on histidine residues in specific phosphocarrier proteins of low molecular mass (9.5 kDa) involved in bacterial sugar transport, a similar reaction where the protein is the enzyme EC 2.7.9.2, pyruvate water dikinase, is part of the mechanism of that enzyme	-	
2.7.3.9	phosphoenolpyruvate + protein histidine = pyruvate + protein Npi-phospho-L-histidine	in a first reaction step phosphate is transferred to the N-3 position of the imidazole ring of histidine	642504, 642508	
2.7.3.9	phosphoenolpyruvate + protein histidine = pyruvate + protein Npi-phospho-L-histidine	in a second reaction step phosphate is transferred to the N-1 position of the imidazole ring of the histidine containing-protein (i.e. HPr), the phospho group of the intermediate phospho-enzyme I can also be transferred to pyruvate or 2-oxobutyrate	642510	
2.7.3.9	phosphoenolpyruvate + protein histidine = pyruvate + protein Npi-phospho-L-histidine	overview on mechanism	642522	
2.7.3.9	phosphoenolpyruvate + protein histidine = pyruvate + protein Npi-phospho-L-histidine	ping-pong mechanism	642501