All amino acids have two ionizable functional groups: an a-amino group (average pK, of 9.4) and an a-carboxylic acid group(average pK, of 2.2). Lysine also has an ionizable side chain (R group) with a pK, of about 10.5. One of the possible ionizationstates of lysine is shown in the image.iH₂N-CH-C-OHCH₂1IncorrectCH₂CH₂CH₂NH₂At what pH would the structure be the predominant ionization state? Consider the ionization state of all three of thefunctional groups.Show Transcribed Text11.9SThe protonated form of the R group of lysine is shown in the structure. The ratio of the charged (protonated) form to thedeprotonated form depends on the pK, of the R group and the pH of the solution.12.010.55.4Select all the pH values at which the charged form of the R group would predominate.2.2

They form the basic unit of the proteins. The acidity of the amino acids can be determined from…

The protonated form of the R group of lysine is shown in the structure. The ratio of the charged (protonated) form to the deprotonated form depends on the pK, of the R group and the pH of the solution. Select all the pH values at which the charged form of the R group would predominate. 12.0 10.5 5.4 2.2

The protonated form of the R group of lysine is shown in the structure. The ratio of the charged (protonated) form to the deprotonated form depends on the pK, of the R group and the pH of the solution. Select all the pH values at which the charged form of the R group would predominate. 12.0 10.5 5.4 2.2

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Question

All amino acids have two ionizable functional groups: an a-amino group (average pK, of 9.4) and an a-carboxylic acid group
(average pK, of 2.2). Lysine also has an ionizable side chain (R group) with a pK, of about 10.5. One of the possible ionization
states of lysine is shown in the image.
i
H₂N-CH-C-OH
CH₂
1
Incorrect
CH₂
CH₂
CH₂
NH₂
At what pH would the structure be the predominant ionization state? Consider the ionization state of all three of the
functional groups.
Show Transcribed Text
11.9
S
The protonated form of the R group of lysine is shown in the structure. The ratio of the charged (protonated) form to the
deprotonated form depends on the pK, of the R group and the pH of the solution.
12.0
10.5
5.4
Select all the pH values at which the charged form of the R group would predominate.
2.2

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