2.1.1.17	1-methyl-4-phenylpyridinium	enhances activity. S-Adenosylmethionine hypermethylation can be involved in the etiology of Parkinson‘s disease and an increase of phospholipid methylation could be one of the mechanisms by which 1-methyl-4-phenyl-pyridinium causes parkinsonism	485188	
2.1.1.17	betaine	attenuates alcoholic steatosis by restoring phosphatidylcholine generation via the phosphatidylethanolamine methyltransferase pathway, the effect is enhanced by ethanol, which alone has no effect on expression levels of the enzyme, overview	675185	
2.1.1.17	ethanol	enhances the inducing and protecting effects of betaine on the enzyme, alone has only a slightly activating effect on the enzyme activity, overview	675185	
2.1.1.17	L-Cys	enhances activity, optimal concentration 10 mM	485175, 485176	
2.1.1.17	additional information	17-beta-estradiol induces the enzyme in hepatocytes	697842	
2.1.1.17	additional information	light-activation is mediated by transducin	485194	
2.1.1.17	progesterone	physiological levels of progesterone activate PE-NMT and sphingomyelin synthase	719189	
2.1.1.17	Triton X-100	enhances activity, optimal concentration 0.04%	485175, 485176	
2.1.1.17	Tween 20	stimulates	485190