. "Catalysis of the reaction: S-adenosyl-L-methionine(1+) + nicotinate = N-methylnicotinate + S-adenosyl-L-homocysteine." . . . "nicotinate N-methyltransferase activity" . "furanocoumarin 8-O-methyltransferase activity" . "S-adenosyl-L-methionine:nicotinate N-methyltransferase activity" . . .