A small generic section of the primary structure of an helix is given below. -am

Question

A small generic section of the primary structure of an helix is given below. -amino acid-amino acid2-amino acid3-amino acid4 -amino acids -amino acids-amino acid (a) Which amino acid residue's backbone forms a hydrogen bond with the backbone of the fifth (5th) residue? Choose the correct residue from the drop-down menu. amino acid Sec nover (b) Which of the following peptide segments is most likely to be part of a stable helix at physiological pH? O- Tyr- Trp-Phe-Val-lle- O -Pro-Leu-Thr-Pro-Trp- - Glu-Glu-Glu-Glu-Glu- O-Gly-Gly-Gly-Ala-Gly- O -Lys-Lys-Ala-Arg-Ser- O -Gly-Arg-Lys-His-Gly- O -Glu-Leu-Ala-Lys-Phe-

Explanation / Answer

Answer

A) amino acid 2

Because three amino acid residues will rotate to form a helix structure

B) answer is Glu-Leu-Ala-Lys-Phe

Because in a sequence of amino acids, positive and negative charges repel each other

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