The Figure Below Shows the Predominant Structure of an Oligopeptide

question 17

Essay

The figure below shows the predominant structure of an oligopeptide at pH 7.0.
a.How many amino acids are present in this peptide?
b.Circle one peptide bond in this peptide.
c.Draw a square around one alpha carbon in this peptide
d.The pK_as of the ionizable groups in this peptide are 2.0,4.0,and 9.0.What is the ionic charge of this molecule at pH 1.0
e.What is the name of the N-terminal amino acid in this peptide?

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