... methionine residueswere Met39, Met171, Met254, Met273 and Met352. It isknown that the common sites of oxidation in proteins arehistidine, lysine, proline, cysteine, arginine and methionineresidues ... paradoxus strains. By usingthe neighbour-joining, maximum-parsimony and maximum-likehood (Fig. 1) methods fromPHYLIP and testing theresulting trees using bootstrap analysis, the strain Iso1specifically ... acid derivates containingD-methionine,D-leucine and D-alanine and against N-chloroacetyl-D-phe-nylalanine. Importantly, the enzyme does not act on theN-acetyl-L-amino acid derivatives....