Please save all answers. Questions that you save can still be eu have 1 UNSAVED ANSWER-SAVE ALL ANSWERSQuestion 30The pK, values for Lysine are 1.92/9.99/13.8. At what pH will the amino acidnot migrate in an electrical field?Select an answer and submit. For keyboard navigation, use the up/down arrow keys to selectan answer.a10.99.811.99.7e8.4f11.2g10.611.611.1

Amino acids are the building blocks of proteins which are composed of amino group (NH3+), carboxyl…

Answered: The pK values for Lysine are…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Draw the titration curves for the following AA’s: Aspartic acid, Alanine, Lysine, Valine, Serine, and Trrosine.
In the table below, name each functional group in anserine that is ionizable and record an estimated pKa
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For the following pentapeptides: Ser-Glu-Gly-His-Ala and Gly-His-Ala-Glu-Ser A. Compute their isoelectric pH (pI). Show full solution. Use standard pKa values. B. Do these peptides with the same amino acid composition have different net charges at pH 7.0? Explain briefly. C. Would you expect the titration curves of the two peptides to differ? Why or Why not?
Given below is the name of a polypeptide Valyllysylalanylhistidylaspartylphenylalanylglycylglutamate The average pKas of different groups/side chains are shown in the table below: Group/amino acid side chain pKa C-terminus 3.5 3.9 E 4.1 H 6.0 8.4 Y 10.5 K 10.5 R 12.5 N-terminus 9.0 What is the total charge of this molecule at pH 5? [ Select ] What is the total charge of this molecule at pH 9.5? [ Select] > >
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Suppose you have a solution of a protein, which contains a specific Tyr residue that has an actual (measured) pKa of 8.8. The protein binds a ligand by several noncovalent interactions, one of which is a hydrogen bond in which the Tyr phenolic hydroxyl group must serve as a hydrogen bond donor. Calculate the percentage of the protein molecules in which that tyrosyl residue's phenolic hydroxyl group could serve as a hydrogen bond donor at pH 8.5
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The pK values for Lysine are 1.92/9.99/13.8. At what pH will the amino acid not migrate in an electrical field?