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Polypeptide Chain Structure & Function

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In the following polypeptide chain where do you expect to see bends, twists, and
disulfide linkages forming?
Which ones of these amino acids is/are likely to be in the interior of a protein?
Mark the amino acids likely to contribute to the overall charge of the peptide in neutral pH.

Chain:
Ile-Ala-His-Thr-Tyr-Gly-Pro-Phe-Glu-Ala-Ala-Met-Cys-Lys-Trp-Glu-Ala-Gln-Pro-Asp-Gly-Met-Glu-Cys-Ala-Phe-His-Arg

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Solution Summary

Solution goes through the chain to mark where bends and twists will be as well as identifying which amino acids may be inside a protein.

Solution Preview

Bends and twists usually take place at "small, uncharged" amino acids, such as glycine (Gly) and proline (Pro).

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Ile-Ala-His-Thr-Tyr-Gly-Pro-Phe-Glu-Ala-Ala-Met-Cys-Lys-Trp-Glu-Ala-Gln-Pro-Asp-Gly-Met-Glu-Cys-Ala-Phe-His-Arg

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Disulfide links occur at cysteine residues. Therefore, the two cysteine ...

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