L-histidyl-[protein] + phosphoenolpyruvate = N(pros)-phospho-L-histidyl-[protein] + pyruvate
l-histidyl-[protein] + phosphoenolpyruvate = n(pros)-phospho-l-histidyl-[protein] + pyruvate
"enzyme I of the phosphotransferase system"
"enzyme i of the phosphotransferase system"