s-adenosyl-l-methionine synthetase ( ec 2.5.1.6 ) , s-adenosyl-l-homocysteine hydrolase ( ec 3.3.1.1 ) , cystathionine synthase ( ec 4.2.1.21 ) , as well as several transmethylases were detected and localized in cytosolic rather than particulate fractions .
C0039676
methionine synthetase
C0025831
transmethylases