Which of the following is NOT a function of proteins?

Proteins are remarkable molecules that serve various roles within biological systems. One of the primary functions of proteins is catalyzing biochemical reactions, which is carried out by enzymes. Enzymes are specialized proteins that accelerate chemical reactions, thereby facilitating metabolic processes essential for life.

Additionally, proteins contribute structural support to cells and tissues. For instance, collagen in connective tissues and keratin in hair and nails are proteins that provide strength and stability.

Proteins also play a significant role in the transport of molecules across cellular membranes. Transport proteins, such as channels and carriers, help move ions and molecules into and out of cells, maintaining homeostasis and enabling cellular communication.

However, storing genetic information is not a function of proteins. Instead, this function is primarily associated with nucleic acids, specifically DNA. DNA serves as a blueprint for genetic information, directing the synthesis of proteins but does not involve proteins in the actual storage of genetic data. Therefore, the correct answer highlights a fundamental distinction between the roles of proteins and nucleic acids in biological systems.