2.1.1.137	arsenite	the enzyme activity is completely inhibited by elevated concentrations of the substrate arsenite (0.2 mM)	397	
2.1.1.137	dimethylselenoxide	weak activator of recombinant As(III)-methyltransferase, weak inhibitor of arsenite methylation in hepatocytes	23300	
2.1.1.137	glutathione	addition of 20 mM GSH sharply inhibits methylation	44	
2.1.1.137	GSH	suppression of formation of trimethylarsine oxide, stimulatory effect on the rate of methylarsonate and dimethylarsinate production from arsenite is concentration-dependent	142	
2.1.1.137	GSH	addition of GSH stimulates the overall rate for As methylation, but inhibits formation of trimethylarsenite	142	
2.1.1.137	HgCl2	-	110	
2.1.1.137	methylselenic acid	-	34890	
2.1.1.137	selenate	more than 1 mM selenate necessary for 50% inhibition	2162	
2.1.1.137	Selenite	50% inhibition with 0.0126 mM selinite	1937	
2.1.1.137	Selenite	addition of selenite at 1:10 molar ratio with arsenite in the reaction mixture completely abolishes the arsenic methylation	1937