Topic B4 Flashcards
Structure and metabolism of calciferol (vitamin D). Conversion of provitamin to calciferol
1
Q
structure of calciferol (vitamin D)
A
2
Q
Metabolism of calciferol (vitamin D)
A
3
Q
What is the most potent vitamin D metabolite?
A
1,25-dihydroxycalciferol
Behave more like a hormone than as the cofactor of an enzyme
4
Q
Storage
A
- Liver (+ adipose tissue)
- Form 25-OH-cholecalciferol + palmitic acid
5
Q
Excretion
A
Bound to glucoronic acid → bile → feces
