Guest guest Posted September 23, 2003 Report Share Posted September 23, 2003 Thanks indeed. Ratan. - " Duncan Crow " <duncancrow Tuesday, September 23, 2003 2:19 PM Re: Re: Precursors of cysteine? > > But what are the natural precursors of cysteine available in the > > food we eat? Ratan. - " Elaine " > > <mem121 " *§ @y " > > Saturday, June 21, 2003 > > 8:58 AM Cysteine levels associated > > with breast cancer > > > The " precursors " are very plentiful in cold-processed whey > concentrate and particularly isolate -- cystine, which is a > dipeptide of two cysteine molecules, and glutamylcysteine -- a > glutamine and cystine dipeptide. There are a couple of other minor > players. > > Cysteine must be bound to another amino acid to be effective as a > cysteine donor - cysteine by itself does not produce glutathione, > which is the real outcome they're after in this instance. > > Free cysteine is treated as a toxin, and it produces toxic > metabolites. When the " cysteine levels " in the blood or tissues are > analysed they never mean free cysteine. It's always bound. > > > Duncan Crow Quote Link to comment Share on other sites More sharing options...
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