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How it Works Vitamin B12, a water-soluble vitamin that is essential for many bodily processes, including the production of red blood cells and the functioning of the nervous system, is delivered directly into the bloodstream

Generally, hydrophobic residues form essential contacts during protein-protein interactions, whereas acidic residues mediate long-range interactions with positively charged residues 50-53

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10.1124/jpet.109.161711 127 YapB

"For a normal, healthy person who doesn't have demonstrated malabsorption, a B12 supplement with 25-50 mcg