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This question was created from Extra Peptide Sequencing Problems


I just want to know the sequence of this heptapeptide


2. A heptapeptide was found to have an amino acid composition of asp. leu, lys, 2 met, phe and tyr.
a) Trypsin has no effect on the heptapeptide.
b) One cycle of Edman degradation renders:
c) Chymotrypsin treatment yields a dipeptide and a tetrapeptide, as well as a free
amino acid.
d) The tetrapeptide generated by chymotrypsin is known to contain leu, lys, and
met. No met is present in the dipeptide.
e) Cyanogen bromide treatment generates a dipeptide, a tetrapeptide, and free lys.

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