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What is the sequence of the decapeptide based on the amino acid compositions obtained from partial hydrolysis and the release of PTH-val by Edman's reagent?

1.Ile, Phe
2.Ile, Arg, Ala
3.Arg, Ile
4.Ile, Ser
5.Phe, Ile, Glu
6.Glu, Val
7.Ser, Ile, Tre
8.His, Arg, Tre, Ser

1 Answer

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Final answer:

Without specific partial hydrolysis data, it is not possible to conclusively determine the decapeptide sequence. The sequence is deduced by analyzing peptide fragments, which are not provided in the question.

Step-by-step explanation:

The sequence of the decapeptide can be determined by analyzing the amino acid compositions resulting from partial hydrolysis and the identification of PTH-val released by Edman's reagent. Each step in Edman's degradation releases the N-terminal amino acid of the peptide, allowing us to deduce the presence of valine at the N-terminus. However, using the partial hydrolysis data along with the specific knowledge mentioned in the question, we can construct the peptide sequence step by step.

Unfortunately, without the necessary experimental data on the specific partial hydrolysis products obtained, giving a conclusive sequence for the decapeptide is not possible. The data would typically consist of different peptide fragments resulting from the partial hydrolysis, which when pieced together, would reveal the sequence of the decapeptide.

Given that there are multiple possible orders for the amino acids based on partial hydrolysis without a clear method to determine their arrangement, only generic information about peptide sequencing is provided.

User Lex Podgorny
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