Explain the mysterious peptide x is a non-apeptide

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Reference no: EM13176781

The mysterious peptide X is a nonapeptide that cannot be sequenced by Edman degradation. However, it is susceptible to cleavage by proteases, and the resulting peptide fragments can be sequenced. Treatment of peptide X with trypsin yields the tripeptide phe-ala-arg while treatment with chymotrypsin yields the tripeptide ala-arg-phe. Propose a strcture for peptide X and explain why it cannot be sequenced by Edman degradation.

Reference no: EM13176781

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