What is the structure of the phenylhydantoin derived from the ...

[ap345]

What is the structure of the phenylhydantoin derived from the first cycle of the Edman degradation of Phe-Ala-Ser?
  A)
 
  D)
 
  B)
 
  E)
 
  C)
 

Question 2

Bradykinin is a nonapeptide, Arg-Pro-Pro-Gly-Phe-Ser-Pro-Phe-Arg. In addition to one mole of Arg, what peptides are present after hydrolysis of bradykinin with chymotrypsin?
  A)
  Arg-Pro-Pro and Gly-Phe and Ser-Pro-Phe
  B)
  Pro-Pro-Gly and Phe-Ser-Pro-Phe-Arg
  C)
  Arg-Pro-Pro-Gly-Phe and Ser-Pro-Phe
  D)
  Arg-Pro-Pro-Gly-Phe-Ser and Pro-Phe
  E)
  Pro-Pro-Gly and Phe-Ser-Pro-Phe-Arg

[karlss]

Answer to Question 1

b

Answer to Question 2

c

[ap345]

Thanks

[karlss]

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