Question

Sour taste is perceived by which receptors?

• A. T1R1
• B. T1R2
• C. T1R3
• D. TRPP3

Hint:

Sour taste is detected by TRPP3 receptors, which are activated by acidic substances like citric acid found in lemons and other sour foods.

Answer 1

The Correct Option is D

Sour taste is perceived by specific receptors known as TRPP3 channels. These are ion channels that play a crucial role in detecting sourness, which is typically associated with acidic substances that dissociate protons (H⁺) in solution.

When we consume something sour, such as lemon juice, the acids contribute to the release of H⁺ ions. These ions interact with the TRPP3 receptors located on the taste cells of the tongue. The activation of these receptors generates a signal that the brain interprets as a sour taste.

Conclusion: TRPP3 receptors are responsible for the perception of sour taste, making them crucial in taste physiology.