L 3Ucin3 



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 t 



Iso-] 2ucin3 



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CH- 



CHs-CK^'- 



OH 



T.TTT 



Ph anyl - al r.,nin 9 



H 





HC 



- C 



C 



C '^' 

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.C-CKg- 



COCK 

 f 



CH 

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Tyrosma 



H 



HOC 



C '■■ 



C - 

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H 



'I 



*^ 



C 

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C— Uj.Xo' 



COOH 



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