Methionine is an essential amino acid that can be metabolized to homocysteine. Using the figure below, describe the R-group on homocysteine and how it differs from methionine. Include the functionality of the thiol as part of this discussion.

Methionine is an essential amino acid that can be metabolized to homocysteine. Using the figure below, describe the R-group on homocysteine and how it differs from methionine. Include the functionality of the thiol as part of this discussion.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter10: From Proteins To Phenotypes

Section: Chapter Questions

Problem 14QP: If phenylalanine was not an essential amino acid, would diet therapy (the elimination of...

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Question

Methionine is an essential amino acid that can be metabolized to homocysteine. Using the figure below, describe the R-group on homocysteine and how it differs from methionine. Include the functionality of the thiol as part of this discussion.

H₂N
CH₂
N5-methyl THF
-CH₂
go
NH₂
methionine (met)
H
Ar
vitamin B12
H₂N
methyl-B₁2
tetrahydrofolate (THF)
SH
H
NH3
homocysteine (hyc)
Ar

Chemical pathways by which living things function, especially those that provide cellular energy, such as the transformation of energy from food into the energy of ATP. Metabolism also focuses on chemical pathways involving the synthesis of new biomolecules and the elimination of waste.

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