Quiz 2
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The amino acid residues in the peptide below have these pKa's:

residue

1

2

3

4

α-COOH

1.83

2.02

2.32

2.17

α-NH3+

9.13

8.80

9.62

9.04

side chain

none

none

none

12.48


1-8. Identify the residues by writing their 3-letter and 1-letter abbreviations.

residue

1

2

3

4

3-letter abbreviation

       

1-letter abbreviation

       

9-10. At what pH range (2 numbers) is the peptide shown?                                                   

The amino acid residues in the peptide below have these pKa's:

residue

1

2

3

4

α-COOH

2.17

2.36

1.82

2.38

α-NH3++

9.13

9.60

9.17

9.39

side chain

none

none

6.00

none


1-8. Identify the residues by writing their 3-letter and 1-letter abbreviations.

residue

1

2

3

4

3-letter abbreviation

       

1-letter abbreviation

       

9-10. At what pH range (2 numbers) is the peptide shown?                                                   

The amino acid residues in the peptide below have these pKa's:

residue

1

2

3

4

α-COOH

2.36

1.88

2.20

2.11

α-NH3++

9.68

9.60

9.11

9.62

side chain

none

3.65

10.07

none


1-8. Identify the residues by writing their 3-letter and 1-letter abbreviations.

residue

1

2

3

4

3-letter abbreviation

       

1-letter abbreviation

        

9-10. At what pH range (2 numbers) is the peptide shown?                                                   

The amino acid residues in the peptide below have these pKa's:

residue

1

2

3

4

α-COOH

2.21

1.99

2.19

2.18

α-NH3+

9.15

10.96

9.67

8.95

side chain

none

none

4.25

10.53


1-8. Identify the residues by writing their 3-letter and 1-letter abbreviations.

residue

1

2

3

4

3-letter abbreviation

       

1-letter abbreviation

       

9-10. At what pH range (2 numbers) is the peptide shown?                           

 

 

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