Sodium-dependent multivitamin transporter is a protein that in humans is encoded by the ''SLC5A6'' gene. The SMVT is a transporter for pantothenic acid (vitamin B5) and

biotin Biotin (or vitamin B7) is one of the B vitamins. It is involved in a wide range of metabolic processes, both in humans and in other organisms, primarily related to the utilization of fats, carbohydrates, and amino acids. The name ''biotin'', bor ...

(vitamin B7) at the

blood–brain barrier The blood–brain barrier (BBB) is a highly selective semipermeable membrane, semipermeable border of endothelium, endothelial cells that prevents solutes in the circulating blood from ''non-selectively'' crossing into the extracellular fluid of ...

. It is also a transporter for alpha lipoic acid and iodide. Transport of these nutrients is competitive and a surplus of a given nutrient may saturate the transporter and prevent the uptake of other nutrients.

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Further reading