PROTEINS 



77 



5. Caprine 



6. Leucine 



7. Isoleucine 



8. Serine 



9. Cy stein 



10. Cystin 



CH,CH 2 CH 2 CH 2 CHNH 2 COOH 

 CH, 





CH CH 2 CHNH 2 COOH 



CH 3 

 CH 3 CH, 





CH CHNH 9 COOH 



CH, 



CH 2 OH 

 CHNH 2 



COOH 

 CH 2 SH 



CHNH 2 



COOH 



CH 2 S S CH 2 



CHNH 2 CHNH 2 

 COOH COOH 



B. Monoamino dicarboxylic acids. 



