Question

Which of the following amino acids would most likely be found on the surface of a...

Which of the following amino acids would most likely be found on the surface of a protein?
A) Aspartic acid
B) Leucine
C) Proline
D) Valine
E) Phenylalanine

its not A! its wrong
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Homework Answers

Answer #1

Answer: Proline

Explanation: Proline is a amino acid with nonpolar aliphatic side chain.

- Though it is aliphatic and hydrophobic, the secondary structure of proteins prefers proline on surface as it is rigid and provides rigidity to the secondary structure.

Note: If this is a single choice answer then answer is Proline. If this is a more than one answers question, Aspartic acid is also correct choice along with Proline. And also the question is asking: amino acids.

Other options:

A.) Aspartic acid: Aspartic acid is charged and hydrophilic amino acid. Hence, they are also mainly found on the surface of the protein. They are found on surface as they are water loving and can easily interact with water molecules.

- Rest all Leucine, Valine and Phenylalanine are hydrophobic in nature hence they are mainly found inside the protein as they remain away from water molecules.

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