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Unformatted text preview: What conclusion can be reached about the amino acid composition of P 1 relative to that of P 2 ? b) Draw the structure of the tetrapeptide HECK in an ionization state consistent with physiological pH (7.0), and calculate its approximate isoelectric point. Use 3.65 and 7.80 as the pK a values of the C-terminal carboxyl and N-terminal amino groups, respectively, and the solution pK a s of the amino acid side chains in your calculation (E: 4.07, H: 6.04, C: 8.37, K: 10.54)....
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- Spring '10