ENDOCRINE ORGANS AND RESPIRATORY SYSTEM
THYROID
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following inactivates thyroid hormone?
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D1
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D2
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D3
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D4
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Explanation:
Detailed explanation-1: -Abstract. Iodothyronine deiodinases (D1, D2, and D3) comprise a family of selenoproteins that are involved in the conversion of thyroxine (T(4)) to active triiodothyronine (T(3)), and also the inactivation of both thyroid hormones.
Detailed explanation-2: -There are three known deiodinases: D1 and D2 activate the pro-hormone thyroxine (T4) to T3, the most active form of thyroid hormone, while D3 inactivates thyroid hormone and terminates T3 action.
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