Question

A protein ' $X$ ' with molecular weight of $70,000 u$, on hydrolysis gives amino acids One of these amino acid is

• A.
• B.
• C.
• D.

Hint:

In proteins, the amino acids that result from hydrolysis are generally \( \alpha \)-Amino acids, which have the amino group attached to the carbon adjacent to the carboxyl group.

Answer 1

The Correct Option is B

Step 1: The given molecule has the structure of an amino acid, which is identified by the presence of both a carboxyl group (-COOH) and an amine group (-NH₂).

Step 2: The structure shown in the second image matches the chemical structure of Leucine, which is a branched-chain amino acid (BCAA). The chemical formula of Leucine is C₆H₁₃NO₂, and its side chain contains an isopropyl group (–CH₃) attached to a central carbon.

Step 3: The molecular weight of Leucine is approximately 131.17 g/mol, and it is one of the amino acids that could be released upon hydrolysis of a protein like 'X' with the molecular weight of 70,000u.

Thus, the correct answer is option (B) Leucine.