The pKa for the side chain amino group in lysine is 10.4. If we were working at physiological pH 7.4, what would be the ratio of the protonated to unprotonated versions of lysine?   a. 1000:1   b. 3:1   c. 1:1000   d. 1:3

World of Chemistry, 3rd edition
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Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
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Chapter21: Biochemistry
Section21.1: Introduction To Proteins
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The pKa for the side chain amino group in lysine is 10.4. If we were working at physiological pH 7.4, what would be the ratio of the protonated to unprotonated versions of lysine?

  a.

1000:1

  b.

3:1

  c.

1:1000

  d.

1:3

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