function:Mediates the Na(+)-independent high affinity transport of organic anions such as the thyroid hormones thyroxine (T4) and rT3. Other potential substrates, such as triiodothyronine (T3), 17-beta-glucuronosyl estradiol, estrone-3-sulfate and sulfobromophthalein (BSP) are transported with much lower efficiency.,similarity:Belongs to the organo anion transporter (TC 2.A.60) family.,tissue specificity:Highly expressed in brain and in Leydig cells in testis. Detected in many brain regions with the exception of pons and cerebellum.,
Cell membrane ; Multi-pass membrane protein . Expressed in both luminal and abluminal membranes of brain capillary endothelial cells. Localized to the apical membrane and basal surfaces of choroid plexus (By similarity). .
Highly expressed in brain and in Leydig cells in testis. Detected in many brain regions with the exception of pons and cerebellum. Not strongly enriched in cerebral microvessels.
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