Question

The general characteristics of cytosolic globular proteins are described. Which is the most inappropriate? Select one: a. The core of these proteins is formed mostly by hydrophobic residues. b. The surface of these proteins is formed mostly by hydrophilic residues. c. These proteins usually have no disulfide bonds. d. They always need to have characteristic quaternary structures.

Answer 1

Answer : D is the inappropriate about cytosolic globular proteins .

Usually intracellular proteins lack disulfide bonds and extracellular proteins have disulfide bonds . Primary structure is a chain of aminoacids joined by peptide bonds and secondary structure such as alpha helixes , beta sheets are joined by hydrogen bonds .

Cytosolic globular proteins are folded in such a way that ,their tertiary structure consists of hydrophilic Aminoacids on the surface and hydrophobic Aminoacids on their core or inside. Some globular proteins have quaternary structure but they need not always have quarternary structure.