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A hexapeptide has the composition Ala,Gl...

A hexapeptide has the composition `Ala,Gly,Phe,Val.` Both the `N-` terminal and `C-` teminal units are Val. Cleavage of the hexapeptide by chymotypsin gives two different tripeptides, both having Val as the N-terminal group. Among the products of random hydrolysis is a `Ala-Val` dipeptide fragment . What is the primary structure of the hexapeptide?

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