Consider a tripeptide (a peptide that's only 3 amino acids long) composed of one molecule each of lysine, leucine, and the hypothetical amino acid lupine (which doesn't actually exist, so don't try to look it up). Lupine has an ionizable side group with a pa of 6.3. When this tripeptide is dissolved in an aqueous solution at pH 5.0, the net charge on the molecule is +2. Give the charge on the protonated form of the lupine side group, and the charge on the deprotonated form of the lupine side group. show your work or explain how you determined the charge on each form of the lupine side groups

Organic And Biological Chemistry
7th Edition
ISBN:9781305081079
Author:STOKER, H. Stephen (howard Stephen)
Publisher:STOKER, H. Stephen (howard Stephen)
Chapter9: Proteins
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3a) Consider a tripeptide (a peptide that's only 3 amino acids
long) composed of one molecule each of lysine, leucine, and the
hypothetical amino acid lupine (which doesn't actually exist, so
don't try to look it up). Lupine has an ionizable side group with a
pa of 6.3. When this tripeptide is dissolved in an aqueous
solution at pH 5.0, the net charge on the molecule is +2. Give
the charge on the protonated form of the lupine side group, and
the charge on the deprotonated form of the lupine side group.
show your work or explain how you determined
the charge on each form of the lupine side groups

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