| Modification Notes |
The sodium-dependent vitamin C transporters SVCT1 and SCVT2 are membrane transporters for L-ascorbic acid (Vitamin C) (1-4). Both SVCT proteins mediate high affinity Na+-dependent L-ascorbic acid transport and are necessary for the uptake of vitamin C in many tissues (1-4). SVCT1 is a 604 amino acid protein that is expressed mainly in epithelial tissues, including intestine, kidney, and liver (2,3). SVCT2 is a 592 amino acid protein that shares 65% homology to SVCT1 and has been detected in various metabolically active cells as well as in specialized tissues such as eye and brain (1,4). A non-functional splice variant of SVCT1 has been identified in normal human intestine (5). |