nicotinamide + S-adenosyl-L-methionine = 1-methylnicotinamide + S-adenosyl-L-homocysteine
nicotinamide + s-adenosyl-l-methionine = 1-methylnicotinamide + s-adenosyl-l-homocysteine
"nicotinamide N-methyltransferase"
"nicotinamide n-methyltransferase"