title: Hypothyroidism due to enzyme defects.
mesh_terms: D001692:Biological Transport; D002463:Cell Membrane Permeability; D006801:Humans; D007037:Hypothyroidism / Q000201:enzymology*; D007455:Iodine / Q000378:metabolism; D008661:Metabolism, Inborn Errors; D011485:Protein Binding; D013963:Thyroid Hormones / Q000096:biosynthesis*; D013972:Thyrotropin / Q000502:physiology*
chemical_list: D013963:Thyroid Hormones; D013972:Thyrotropin; D007455:Iodine