Which of the following group of proteins assist in the ‘folding’ of other proteins
**Core Concept**
Protein folding is a crucial process where newly synthesized proteins achieve their native three-dimensional conformation. This process is essential for the proper functioning of proteins, as their tertiary structure determines their biological activity. Molecular chaperones and folding enzymes play a vital role in assisting proteins in achieving their correct conformation.
**Why the Correct Answer is Right**
Molecular chaperones, such as Hsp70 and Hsp60, bind to newly synthesized proteins and prevent their aggregation. They then assist in the correct folding of these proteins by providing a scaffold for the peptide chain to fold onto. This process is essential for the proper functioning of proteins, as misfolded proteins can lead to various diseases, including neurodegenerative disorders. The correct folding of proteins is also assisted by folding enzymes, such as peptidyl-prolyl cis-trans isomerase (PPIase), which catalyze the cis-trans isomerization of peptide bonds.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not specify a group of proteins that assist in the folding of other proteins.
**Option B:** This option is incorrect as it refers to proteins involved in protein degradation, such as ubiquitin, rather than protein folding.
**Option C:** This option is incorrect as it refers to proteins involved in protein synthesis, such as elongation factors, rather than protein folding.
**Clinical Pearl / High-Yield Fact**
Molecular chaperones are essential for preventing protein aggregation and maintaining protein homeostasis in the cell. Disruption of this process can lead to various diseases, including neurodegenerative disorders such as Alzheimer's disease and Parkinson's disease.
**Correct Answer: C. Chaperones.