Question

Which of the following amino acids are typically found in the interior of a globular protein, and which are typically found on the surface: (a)phenylalanine; (b)aspartic acid; (c) lysine; (d) isoleucine; (e) arginine; (f) glutamic acid?

Short answer

The amino acids found on the interior of the globular protein are isoleucine and phenylalanine. The amino acids found on the surface are aspartic acid, lysine, arginine, and glutamic acid.

Step-by-step solution

Amino acids

Amino acids constitute a primary molecule vital for a person's overall health. It can enhance liver function and helps athletes boost their performance.

Globular protein

Globular proteins is are also known as spheroproteins. They are spherical in shape and are a common type of protein. These proteins are water- soluble proteins.

Amino acids found on the interior and surface of the globular protein

Globular proteins comprise the hydrophilic and hydrophobic parts. Amino acids found on the interior of the globular protein are isoleucine and phenylalanine, and possess nonpolar or weakly polar side chains.

These amino acids comprise alkyl or aryl groups and are hydrophobic.

Amino acids found on the surface are aspartic acid, lysine, arginine, and glutamic acid and comprise of , and other groups that undergo hydrogen bonding with water. These are hydrophilic.

Hence, the amino acids in the interior are isoleucine and phenylalanine. Amino acids like aspartic acid, lysine, arginine, and glutamic acid are present on the surface.