What is the role of the molecule S-adenosylmethionine in biochemistry?

A It acts as a coenzyme for the enzyme catalase
B It serves as a methyl group donor in various biochemical reactions ✓
C It is a precursor to the synthesis of the amino acid methionine
D It is an inhibitor of the enzyme acetylcholinesterase

Explanation

S-adenosylmethionine (SAMe) is a molecule that donates methyl groups to other molecules, playing a crucial role in various biochemical processes including methylation reactions.

Source

Biochemistry textbooks such as Lehninger Principles of Biochemistry
Fundamentals of Biochemistry Biochemistry Methylation and Epigenetics Medium MEDICAL Confidence: high