L-histidine + 3 S-adenosyl-L-methionine = hercynine + 3 S-adenosyl-L-homocysteine + 3 H(+)
l-histidine + 3 s-adenosyl-l-methionine = hercynine + 3 s-adenosyl-l-homocysteine + 3 h(+)
L-histidine + 3 S-adenosyl-L-methionine = hercynine + 3 S-adenosyl-L-homocysteine + 3 H(+)
l-histidine + 3 s-adenosyl-l-methionine = hercynine + 3 s-adenosyl-l-homocysteine + 3 h(+)