Thyroid hormones act by binding to nuclear receptor proteins , the thyroid hormone receptors ( TR ) alpha and beta .
thyroid hormones act by binding to nuclear receptor proteins , the thyroid hormone receptors ( tr ) alpha and beta .
B-other_organic_compound I-other_organic_compound O O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O B-protein_family_or_group O O O O O