The Role of Dissymmetry 83 



The same idea should be applied to enzymic systems with a definite sequence 

 in the arrangement of their Hnks of dissymmetric L-amino acids. This gives rise 

 to a definite, and always uniform, orientation of the molecules taking part. Out 

 of the chaos of different molecules of the surrounding solution, the enzyme- 

 catalyst strings together an appropriate molecule in a definite order. Weakly 

 associated with the molecule of the enzyme by the Pasteur effect, the molecular 

 system, which has been built up in this way, is imprinted by the molecule which 

 propagated it, just as a stereotype or a page of text is printed by the matrix of 

 a printing machine. 



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