successive processes of rearrangement, acetylation, and oxidation of the side chain followed by hydrolysis

of the enzyme is fully active, His-118 is not essential. The carbohydrate side chain is attached via

many hitherto inaccessible peptides containing amino acid units ( aspartic acid , glutamic acid , lysine, arginine) with reactive side-chain groups, thus showing

breaking the toxin antitoxin bonds; this research lent support to Ehrlich’s side-chain theory, of

a variety of reactions, most of which involve the side-chain reactions of

Paris. This diagnostic method today is called the Gruber-Widal reaction. The side-chain theory of

often is referred to as the- R group or the side chain. The- R