Answer to Question #188667 in Biochemistry for Kim

Question

Vitamin D3 is derived from cholesterol. How and in which tissues does conversion occur?

Answer 1

Answer :-

Vitamin D₃ is derived from cholesterol

we know that the Vitamin D₃ produced inside the epidermis and it must be further metabolized to be active .

As vitamin D3 is produced in the skin out of the dehydrocholestrol by radiation.

It is found in fatty animals.

the m,ain action is of UVB (290-320nm) on 7 dehydrocholestrol in the epiderms ,

and also dermis.

It results in its conversion pre vitamin D ,

now , it then thermally isomerizes to vitamin required that is vitamin D₃