label: 4-(3-methylbut-2-enyl)-L-abrine + S-adenosyl-L-homocysteine + H(+) => 4-(3-methylbut-2-enyl)-L-tryptophan + S-adenosyl-L-methionine
label_lc: 4-(3-methylbut-2-enyl)-l-abrine + s-adenosyl-l-homocysteine + h(+) => 4-(3-methylbut-2-enyl)-l-tryptophan + s-adenosyl-l-methionine