3.Total acid hydrolysis of a pentapeptide complemented by total alkalinehydrolysis yields an equimolar mixture of 5 amino acids listed alphabetically, ala-cys,lys,phe,ser. N-terminal analysis with phenylisothiocyanate (PITC) generate PTH-ser. Trypsin digestion produces a cripeptide where N-terminal residue is cys and a dipeptide with ser as its N- terminal.Chemotrypsin digestion of the above tripeptide yields ala plus another dipeptide. A.What is the amino acid sequence of the tripeptide 3.What is the amino acid sequence of the dipeptide derived from trypsin digestion? C.What is the primary structure of the original pentapeptide?

Question

Pls help me on question # 3

3.Total acid hydrolysis of a pentapeptide complemented by total alkalinehydrolysis yields an
equimolar mixture of 5 amino acids listed alphabetically, ala-cys,lys,phe,ser. N-terminal
analysis with phenylisothiocyanate (PITC) generate PTH-ser. Trypsin digestion produces a
cripeptide where N-terminal residue is cys and a dipeptide with ser as its N-
terminal.Chemotrypsin digestion of the above tripeptide yields ala plus another dipeptide.
A.What is the amino acid sequence of the tripeptide
3.What is the amino acid sequence of the dipeptide derived from trypsin digestion?
C.What is the primary structure of the original pentapeptide?
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Transcribed Image Text

3.Total acid hydrolysis of a pentapeptide complemented by total alkalinehydrolysis yields an equimolar mixture of 5 amino acids listed alphabetically, ala-cys,lys,phe,ser. N-terminal analysis with phenylisothiocyanate (PITC) generate PTH-ser. Trypsin digestion produces a cripeptide where N-terminal residue is cys and a dipeptide with ser as its N- terminal.Chemotrypsin digestion of the above tripeptide yields ala plus another dipeptide. A.What is the amino acid sequence of the tripeptide 3.What is the amino acid sequence of the dipeptide derived from trypsin digestion? C.What is the primary structure of the original pentapeptide?

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