MHTCET 11 May 2024 Shift 2 Paper

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Question : 95 of 150

Marks: +1, -0

Which from following proteins acts as an enzyme to break protein to

\alpha

Trypsine
Pepsin
Myosine
Keratine
Option B: Pepsin
Pepsin is an enzyme that functions in the breakdown of proteins into smaller peptides, ultimately leading to the production of $\alpha$ -amino acids. It is one of the main digestive enzymes in the stomach, where it performs its function under acidic conditions. Pepsin specifically cleaves peptide bonds at the aromatic amino acids such as phenylalanine, tryptophan, and tyrosine, leading to shorter polypeptide chains. These shorter chains are further broken down into individual $\alpha$ -amino acids by other proteases and peptidases in the digestive tract.
Here is a brief description of the other options:
Trypsin (Option A): While trypsin is also a proteolytic enzyme, it acts in the small intestine and targets peptide bonds on the carboxyl side of lysine and arginine.
Myosine (Option C): Myosin is not an enzyme but a motor protein responsible for muscle contraction.
Keratine (Option D): Keratin is a protein that forms the structure of hair, nails, and the epidermis of the skin, and does not act as an enzyme.
Therefore, the correct answer is Option B: Pepsin.

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