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: Unknown
Which of the following helps in protein folding 
Select and explain. 
A. Proteases, B. Proteosomes, C. Histones, D. Chaperones
D: Chaperones
Answer: D: Chaperones 
Explanation: Ref. Textbook of Biochemistry for Medical Students. Page. 230
 
Straight forward easy question.
Chaperones

Protein folding is an essential step in the fi al synthesis of any protein. ere is a class of specialized proteins, chaperones, whose function is to assist in this process.
Molecular chaperones function in many cell compartments, including the endoplasmic reticulum, where extensive protein synthesis occurs.
Failure to fold correctly usually results in eventual destruction of the protein.