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Amino Acids (GATE)
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Which of the following amino acids acts as precursor to hormones epinephrine, norepinephrine and dopamine?
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A
L-2-Amino-3-(4-hydroxyphenyl)propanoic acid
💡 Explanation:
In dopaminergic cells in the brain, tyrosine (L-2-Amino-3-(4-hydroxyphenyl)propanoic acid) is converted to l-dopa by the enzyme tyrosine hydroxylase (TH). TH is the rate-limiting enzyme involved in the synthesis of the neurotransmitter dopamine. Dopamine can be converted into norepinephrine and epinephrine.