Part C What could happen if a mutation in a gene caused a hydrophobic amino acid

Question

Part C What could happen if a mutation in a gene caused a hydrophobic amino acid in a polypeptide to be replaced by a hydrophilic amino acid? The new amino acid would not form the same interactions with hydrophobic R groups, and the protein's shape would likely be affected. There would be no effect as long as the protein had quaternary structure, because primary structure does not affect that level. The hydrophilic amino acid could not form the proper peptide bond in its new location, so both the shape and function of the protein would be affected . The shape of the protein would not be affected if only one amino acid in the primary structure is changed.

Explanation / Answer

If a mutation changes a hydrophobic amino acid in a polypeptide to hydrophilic amino acid, then this substitution would likely affect the shape of the protein. The new amino acid would not form the same interaction with hydrophobic R groups.

Hence, the correct option is The new amino acid would not form the same interaction with hydrophobic R groups, and the protein’s shape would likely be affected.

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