side-chain theory

1 definition found

side-chain theory - Collaborative International Dictionary of English v.0.48 :

  Side-chain theory \Side"-chain` the`o*ry\ (Physiol. Chem.)
     A theory proposed by P. Ehrlich as a chemical explanation of
     immunity phenomena. In brief outline it is as follows: Animal
     cells and bacteria are complex aggregations of molecules,
     which are themselves complex. Complex molecules react with
     one another through certain of their side chains, but only
     when these side chains have a definite correspondence in
     structure (this accounts for the specific action of
     antitoxins).
     [Webster 1913 Suppl.]