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 primarily perceived by TRPP3 receptors, which are part of the transient receptor potential (TRP) channel family. These receptors are involved in the detection of acidic substances, including protons, which are responsible for the sour taste in foods like citrus fruits and vinegar.
- Option (1): T1R1 is involved in the detection of umami tastes, not sourness.
- Option (2): T1R2 is involved in the detection of sweet tastes, not sourness.
- Option (3): T1R3 works in conjunction with T1R2 to detect sweet flavors, not sour.
- Option (4): TRPP3 is the correct answer, as it is the receptor involved in sour taste perception.