4. Protein Structure

Which statement regarding primary protein structure is false?

A new drug cleaves some amide linkages in a polypeptide chain. Which level of structure is directly affected?

Fill in the blanks with the primary sequence of the peptide. Use the 1-letter codes. Circle all the α-carbons.

Fill in the blanks with the primary protein structure of the following peptide. Circle all the α-carbons.

The above peptide is an effective buffer at pH 10. Which amino acid residue is responsible for that?

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Identify the primary level of structure for the following peptide, which is an inhibitor of the Angiotensin I Converting Enzyme (ACE I) and a regulator of blood pressure and hypertension. Circle all the α-carbons.