Water Soluble Vitamins | Fat Soluble Vitamins |
Return to Medical Biochemistry Page
Thiamin structure |
Thiamin pyrophosphate |
Riboflavin structure |
Structure of FAD nitrogens 1 & 5 carry hydrogens in FADH2 |
Nicotinamide | Nicotinic Acid |
Structure of
NAD+ NADH is shown in the box insert. The -OH phosphorylated in NADP+ is indicated by the red arrow. |
Pantothenic Acid |
Coenzyme A |
Pyridoxine | Pyridoxal | Pyridoxamine |
Pyridoxal Phosphate |
Biotin |
Deoxyadenosylcobalamin |
Folic Acid positions 7 & 8 carry hydrogens in dihydrofolate (DHF) positions 5-8 carry hydrogens in tetrahydrofolate (THF) |
Active center of tetrahydrofolate (THF). Note that the N5 position is the site of attachment of methyl groups, the N10 the site for attachment of formyl and formimino groups and that both N5 and N10 bridge the methylene and methenyl groups. |
Ascorbic Acid |
All-trans-retinal | 11-cis-retinal |
Retinol | Retinoic Acid |
Ergosterol | Vitamin D2 |
7-Dehydrocholesterol | Vitamin D3 |
25-hydroxyvitamin D3 | 1,25-dihydroxyvitamin D3 |
a-Tocopherol |
Vitamin K1 | Vitamin
K2 "n" can be 6, 7 or 9 isoprenoid groups |
Vitamin K3 |