Insight Into Molecular Determinants of T3 vs T4 Recognition From Mutations in Thyroid Hormone Receptor α and β

Abstract excerpt

CONTEXT: The two major forms of circulating thyroid hormones (THs) are T3 and T4. T3 is regarded as the biologically active hormone because it binds to TH receptors (TRs) with greater affinity than T4. However, it is currently unclear what structural mechanisms underlie this difference in affinity. OBJECTIVE: Prompted by the identification of a novel M256T mutation in a resistance to TH (RTH)α patient, we...

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