The GATE Grind

GATE 2025 BT – Question 56

General Biology · Biochemistry: Biomolecules, biological membranes, channels and pumps, molecular motors, action potential and transport · 2 marks · Multiple select

Which of the following amino acids contain(s) two chiral carbons?

  1. L-Leucine
  2. L-Threonine
  3. L-Isoleucine
  4. L-Asparagine

Practise this question in The GATE Grind →

Show answer and explanation

Correct answer: (B) L-Threonine; (C) L-Isoleucine

Explanation

Threonine has chiral carbons at C$_\alpha$ and C$_\beta$, and so does isoleucine. Leucine and asparagine have only the chiral $\alpha$ carbon.