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The Deiodinases: Their Identification and Cloning of Their Genes

机译:脱碘酶:它们的鉴定和克隆他们的基因

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In this minireview, we provide a historical outline of the events that led to the identification and characterization of the deiodinases, the recognition that deiodination plays a major role in thyroid hormone action, and the cloning of the 3 deiodinase genes. The story starts in 1820, when it was first determined that elemental iodine was important for normal thyroid function. Almost 100 years later, it was found that the primary active principle of the gland,T4, contains iodine. Once radioactive iodine became available in the 1940s, it was demonstrated that the metabolism of T4 included deiodination, but at the time it was assumed to be merely a degradative process. However, this view was questioned after the discovery ofT3 in 1952.We discuss in some detail the events of the next 20 years, which included some failures followed by the successful demonstration that deiodination is indeed essential to normal thyroid hormone action. Finally, we describe how the 3 deiodinases were identified and characterized and their genes cloned.
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