This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Which of the following is the primary function of chaperones? 
Select and explain. 
A. Protein folding, B. Protein synthesis, C. Protein degradation, D. Protein denaturation
A: Protein folding
Answer: A: Protein folding 
Explanation: Chaperones attach to nascent polypeptide chains and prevent wrong foldings so that folding is allowed only in the correct direction. They help in the assembly of teiary and quaternary structure of protein. They are not pa of mature protein. They have ATPase activity. Ref: Vasudevan Biochemistry, 3rd Edition, Page 361