Question:
Which of the following chemical messenger(s) is/are derivative(s) of tryptophan?
Which of the following chemical messenger(s) is/are derivative(s) of tryptophan?
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Tryptophan → Serotonin → Melatonin.
IAA is also an indole derivative coming from tryptophan.
Updated On: Jan 2, 2026
- $\gamma$-amino butyric acid
- Indole acetic acid
- Melatonin
- Serotonin
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The Correct Option is B, C, D
Solution and Explanation
Tryptophan is an aromatic amino acid that serves as a precursor for several important biological molecules.
It is converted into:
- Indole acetic acid (IAA), a plant hormone (B)
- Serotonin, a neurotransmitter (D)
- Melatonin, a hormone derived from serotonin (C)
$\gamma$-Aminobutyric acid (GABA) (A) is derived from glutamate, not tryptophan.
It is converted into:
- Indole acetic acid (IAA), a plant hormone (B)
- Serotonin, a neurotransmitter (D)
- Melatonin, a hormone derived from serotonin (C)
$\gamma$-Aminobutyric acid (GABA) (A) is derived from glutamate, not tryptophan.
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