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Determine the amino acid sequence of a polypeptide from the following results: Acid hydrolysis gives Ala, Arg, His, 2 Lys, Leu, 2 Met, Pro, 2 Ser, Thr, Val. Carboxypeptidase A releases Val. Edman's reagent releases PTH-Leu. Cleavage with cyanogen bromide gives three peptides with the following amino acid compositions: 1. His, Lys, Met, Pro, Ser 2. Thr, Val 3. Ala, Arg, Leu, Lys, Met, Ser Trypsin-catalyzed hydrolysis gives three peptides and a single amino acid: 1. Arg, Leu, Ser 2. Met, Pro, Ser, Thr, Val 3. Lys 4. Ala, His, Lys, Met

   Determine the amino acid sequence of a polypeptide from the following results:
Acid hydrolysis gives Ala, Arg, His, 2 Lys, Leu, 2 Met, Pro, 2 Ser, Thr, Val.
Carboxypeptidase A releases Val.
Edman's reagent releases PTH-Leu.
Cleavage with cyanogen bromide gives three peptides with the following amino acid compositions:
1. His, Lys, Met, Pro, Ser
2. Thr, Val
3. Ala, Arg, Leu, Lys, Met, Ser
Trypsin-catalyzed hydrolysis gives three peptides and a single amino acid:
1. Arg, Leu, Ser
2. Met, Pro, Ser, Thr, Val
3. Lys
4. Ala, His, Lys, Met

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Organic Chemistry

Organic Chemistry

Paula Yurkanis… 4th Edition

Chapter 23, Problem 32

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Step 1

Acid hydrolysis gives us the total amino acid composition of the polypeptide: Ala, Arg, His, 2 Lys, Leu, 2 Met, Pro, 2 Ser, Thr, Val. Show more…

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