Question

Conversion of Norepinephrine to epinephrine is mainly by?

• A. S-adenosyl methionine
• B. Arginine
• C. Phenylalanine
• D. Dehydrogenease

Answer 1

The Correct Option is A

Conversion of norepinephrine to epinephrine is a biochemical process that occurs in the adrenal medulla. The enzyme responsible for this conversion is phenylethanolamine N-methyltransferase (PNMT). The conversion involves the transfer of a methyl group to norepinephrine to form epinephrine. This process requires a methyl donor, which is S-adenosyl methionine (SAM). SAM donates a methyl group to norepinephrine, facilitating its conversion to epinephrine. Thus, the correct option for the conversion of norepinephrine to epinephrine is S-adenosyl methionine.