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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.


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

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

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.

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cell biology questions

1) For each of the following four macromolecules, list their:
i) Monomer(s).
ii) Functional groups.
iii) Linkage type.
iv) Primary function.
a) Carbohydrates
b) Proteins
c) Lipids
d) Nucleic acids

2) Show how a peptide bond forms between the two amino acids, glycine and valine. Draw the structural formulas for the reactants and the product. Label the functional groups and linkages present. 
Glycine + valine → ?

3) Chocolate milk has been a choice for many athletes, as it is a good source of protein, carbohydrates, and lipids. Suppose you were to conduct nutrient testing on a sample of chocolate milk. Describe
a) The tests you would perform and the reagents you would use.
b) The results you would expect to find.

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