Vitamin D is more than just one vitamin. It’s a family of nutrients that shares similarities in chemical structure. In your diet, the most commonly found members are vitamin D2 and D3.

vitamin D, was unambiguously identified in the 1930s, thanks to the work of researchers studying the chemical structures of members of the cholesterol family.

4 Diagram showing biosynthesis of active form of vitamin D - Calcitriol - via the kidneys and the liver - schematic molecular structure chemical illustration. Image Credit: Bass stock/Shutterstock ...

The vitamin D-binding site of DBP-B in the DBP ... Peak area quantitation revealed a 25OHD3 concentration of 0.62 μM. Molecular simulations of the structures of DBP in complex with 1,25(OH ...