What is the role of a chaperone protein?

• A. Assist in RNA and DNA folding.
• B. Assist in membrane transport.
• C. Assist in protein denaturation.
• D. Assist in dehydration synthesis reactions.
• E. Assist in protein folding or re-naturing.

Answer: (E)

Verified step by step guidance

1. Understand the function of chaperone proteins: Chaperone proteins are specialized molecules that assist in the proper folding of other proteins. They ensure that proteins achieve their correct three-dimensional structure, which is crucial for their function.
2. Recognize the importance of protein folding: Proteins must fold into specific shapes to perform their biological functions. Misfolded proteins can lead to diseases or loss of function, making the role of chaperones vital in maintaining cellular health.
3. Identify the process of protein folding: Chaperone proteins bind to nascent or unfolded polypeptides, preventing incorrect interactions and aggregation. They provide a controlled environment for the protein to fold correctly.
4. Explore the role in re-naturing: Chaperone proteins can also assist in re-naturing, which is the process of refolding proteins that have become denatured due to stress or environmental changes.
5. Differentiate from other functions: While chaperone proteins are primarily involved in protein folding, they do not assist in RNA/DNA folding, membrane transport, protein denaturation, or dehydration synthesis reactions. Their main role is to ensure proteins fold correctly and maintain their functional state.