l\T2Xt 



r^ad 



in ord2r would "b 3 a connection lostwaen throo 



,c3nt spirals, which may "be ac( • - - 



.i]y as follows: 



ows : 



icomplishod very 



C 



\ 



C 









%> ::'Z/J 



Th3 sxistence of similar structuros in naturo 

 ovidencod by th 3 f r 3qu 3nt occurronce, among 

 protein disintegration products, of leucine, 



CH, 



is 



^3 



CH, 



:, CH-CHg-CHlTHgCC-OH, 



which has a siTiilar triple connection at the 

 gamraa carbon atom. 



It R.ppears to be at these triple junctions 

 wh 3 r e some of th e r am ark ab 1 e ch em i c al changes 

 occur which take place in living organisms. The 

 three adjacent spirals hold their amino acid 

 molecules in definitely ccordinatsd positions, 

 which should have a profound effect upon their 

 chemical b3havior. 



The triple connection is probably the 

 arrangement Wi.ich occurs most frea_uently in nature, 

 because a n^.mber of wuch groups will collectively 

 form a cluster of hexagonal compartments, and we 

 know that the hexagon is one of the fev/ figures 

 which will completely cover a certain area, as for 

 instance the cro ss- sectional area of a bacillus. 



