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This Concept Map, created with IHMC CmapTools, has information related to: Vitamin LO, Thiamin (B1) absorption Small and Large intestine via hTHTR-1 &2, Cobalamin (B12) Function required for conversion of homocysteine to methonine, B Vitamins ???? Pyroxidine (B6), B Vitamins ???? Biotin (B7), Fat Soluble are Vitamin E, Biotin (B7) Function Required for synthesis of carboxylases that function in gluconeogenisis, FA synthesis, and protein catabolism, Folate (B9) Absorption proximal small intestine, absorbed as a monoglutamate via human Reduced Folate Carrier (hRFC), Cobalamin (B12) Absorption Binds haptocorrin in stomach, binds IF in small intestine, complex is endocytosed in terminal ileum, and complex is processed via endosomal-lysosomal pathway yielding free cobalamin, Niacin (B3) Function Precursor to NAD and NADP, Pyroxidine (B6) Absorption small and large intestine, sodium independent carrier not molecularly defined, B Vitamins ???? Cobalamin (B12), Thiamin (B1) Function Enzyme involved in decarboxylation of pyruvic acid and alpha-ketoglutamci acid, Biotin (B7) Absorption small and large intestine, SMVT, Fat Soluble are Vitamin K, Folate (B9) Function Carries methyl group for conversion of dUMP to dTMP, involved in methylation of cobalamin, Vitamin E function antioxidant, Fat Soluble are Vitamin A, Vitamin E absorption SR-B1 NPC1L1, Pantothenic Acid (B5) Absorption Small and large intestine, sodium dependent multi vitamin transporter (SMVT), SR-B1 CDC36 NPC1L1 same as Cholesterol Transporters