Guest guest Posted May 13, 2008 Report Share Posted May 13, 2008 > > . the body transforms methionine into cysteine, it's all part of > the sulfur pathway. See AI, p.36. > ok, so that's why people with high plasma cysteine would have just as much trouble with a methionine supplement as with a cysteine supplement? > Dave. > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted May 13, 2008 Report Share Posted May 13, 2008 Yes. As you pointed here: http://en.wikipedia.org/wiki/Methionine " Although mammals cannot synthesize methionine, they can still utilize it in a variety of biochemical pathways: " Methionine is converted to S-adenosylmethionine </wiki/S-adenosylmethionine> (SAM) by (1) methionine adenosyltransferase </wiki/Methionine_adenosyltransferase>. SAM serves as a methyl-donor in many (2) methyltransferase </wiki/Methyltransferase> reactions and is converted to S-adenosylhomocysteine </wiki/S-adenosylhomocysteine> (SAH). (3) adenosylhomocysteinase </wiki/Adenosylhomocysteinase> converts SAH to homocysteine </wiki/Homocysteine>. " There are two fates of homocysteine </wiki/Homocysteine>: * " Methionine can be regenerated from homocysteine [...] * " Homocysteine can be converted to cysteine. [...] " Or, as I say, check out AI. Dave. ------------------- Posted by: " " lindajaytee@... <mailto:lindajaytee@...?Subject=%20Re%3A%20methionine%20in%20supps%3F%20And\ y%3F%20%28%29> lindajaytee <http://profiles.yahoo.com/lindajaytee> Mon May 12, 2008 11:58 pm (PDT) > > . the body transforms methionine into cysteine, it's all part of > the sulfur pathway. See AI, p.36. ok, so that's why people with high plasma cysteine would have just as much trouble with a methionine supplement as with a cysteine supplement? > Dave. Quote Link to comment Share on other sites More sharing options...
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