label: gamma-tocopherol + S-adenosyl-L-methionine <=> (+)-alpha-tocopherol + S-adenosyl-L-homocysteine + H(+)
label_lc: gamma-tocopherol + s-adenosyl-l-methionine <=> (+)-alpha-tocopherol + s-adenosyl-l-homocysteine + h(+)