The enzyme thyroid peroxidase oxidizes iodide A) in the basal lamina B) at the basal cell membrane C) in the Na⁺/I - symporter D) in the cytosol E) at the apical cell membrane

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The enzyme thyroid peroxidase oxidizes iodide at the apical cell membrane, where it is exposed to the lumen of the thyroid follicles. This is where iodide is taken up through the sodium-iodide symporter (Na+/I− symporter), which transports it through the basolateral membrane into the cytoplasm, where it is oxidized by thyroid peroxidase.

The Enzyme Thyroid Peroxidase Oxidizes Iodide