THE experiments of Heyroth and Loofbourow have established a close correlation between the physiological activity of concentrates of vitamin B 1 (after eliminating inactive purines and pyrimidines ...

and would be more consistent with the structure of the BluB active site. Figure 1: A possible mechanism for the biosynthesis of a vitamin B 12 fragment. Work related to vitamin B 12 has resulted ...

In 1958, Columbia University chemist Ronald Breslow proposed that vitamin B1 performs key metabolic processes in the body by forming a molecular structure known as a carbene. The problem ...

Chemists have confirmed a 67-year-old theory about vitamin ... molecule they synthesized in the laboratory that shields the reactive center from water and other molecules. The resulting structure ...

This is quite a theory, enough so to examine what she means, whether there is anything to it, and how this may pertain to allergic reactions to Vitamin B 12. Hang in there ... loosely held in the ...