Most important amino acid which acts as methyl group donor-
Correct Answer: Methionine
Description: Ans. is 'b' i.e., Methionineo Methionine is activated into S-adenosylmethionine, which then transfers its methyl group to an acceptor. Thus methionine acts as methyl donor in transmethylation reactions.o Some of the important transmethylation reactions are-i) Norepinephrine - Epinephrineii) Phosphatidylethanolamine - Phosphatidylcholineiii) Gunaidoacetate - Creatineiv) Ethanolamine - Cholinev) Acetyl serotonin - Serotoninvi) Nucleotides - methylated nucleotides
Category:
Biochemistry
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