2.1.1.20	glucagon	elevates GNMT activity	
2.1.1.20	glucagon	GNMT activity is induced by glucagon	
2.1.1.20	phosphate	in vitro phosphorylation increases activity, about 0.55 mol of phosphate present per mol of N-methyltransferase subunit	
2.1.1.20	Vitamin A	GNMT activity is induced by vitamin A