(R)-reticuline + S-adenosyl-L-methionine <=> (R)-tembetarine + S-adenosyl-L-homocysteine + H(+)
(r)-reticuline + s-adenosyl-l-methionine <=> (r)-tembetarine + s-adenosyl-l-homocysteine + h(+)
(R)-reticuline + S-adenosyl-L-methionine <=> (R)-tembetarine + S-adenosyl-L-homocysteine + H(+)
(r)-reticuline + s-adenosyl-l-methionine <=> (r)-tembetarine + s-adenosyl-l-homocysteine + h(+)