evidence is presented that selenomethionine is also a better substrate of methionine adenosyltransferase ( atp : methionine s-adenosyltransferase , ec 2.5.1.6 ) from i. tricolor , the v ( max ) for selenomethionine being twice as high as that for methionine .
C0036584
selenomethionine
C0025646
methionine