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(A) Examples of SLC proteins transporting vitamins (SLC19 and SLC46). SLC19A1 is the folate transporter, while SLC19A2 represents the thiamine transporters. SLC46A1 is a functionally related protein that drives the absorption of folate. (B) Examples of SLC proteins transporting nucleotides and nucleosides (SLC28 and 29). SLC28A1 is shown as an example of a concentrative nucleoside transporter (CNT), while SLC29A1 is shown as an example of an equilibrative nucleoside transporter (ENT).
