Functional characterization of the 258 A/G (D2-ORFa-Gly3Asp) human type-2 deiodinase polymorphism: a naturally occurring variant increases the enzymatic activity by removing a putative repressor site in the 5' UTR of the gene.

Abstract excerpt

OBJECTIVE: 5' deiodination of thyroid hormone represents an important step in the modulation of the hormonal message. Previous studies indicate that the naturally occurring polymorphism located in 5'-untranslated region of the gene, 258 A/G, is associated with a decrease in circulating T4/T3 ratio, suggesting an increased gene expression. The aim of this study was to characterize the gene variant in vitro....

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