Which one of the following is a globular protein?

Step-by-step solution

Proteins are classified into fibrous and globular proteins based on their molecular shape. Fibrous proteins have a fiber-like structure formed by parallel polypeptide chains held together by hydrogen and disulfide bonds. Examples include keratin (found in hair, wool, silk) and myosin (found in muscles). Globular proteins have a spherical shape formed when the chains of polypeptides coil around. Examples include insulin and albumins. Thus, insulin is a globular protein. Answer: Insulin