Hydroxylysine Volume

It is clearly not possible to discuss here at any length, the metabolism of individual amino acids. In addition, the details of the biosynthesis and catabolism of amino acids, well reviewed in Volume II of Meister s recent book , are concerned more with the formation and breakdown of the carbon skeleton than with the introduction or loss of the amino group. Modifications of some of the twenty amino cicids normally found in proteins have been detected in some protein hydrolysates, e.g. iodinated tyrosine, phosphoserine and hydroxylysine. In some cases the modification appears to be made before the amino acid is incorporated into protein (e.g. iodination of tyrosine) while in other cases modification is believed to occur when the amino acid is already present in proteins (e.g. hydroxylation of lysine, and in some cases, of... 

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