Sulfur Containing AAs

Question 1

Name the 2 sulfur containing AAs

Answer 1

L-methionine, L-cysteine

Question 2

What are sulfur containing AAs essential for?

Answer 2

Detoxification + anti-oxidation

Question 3

What is the function of L-Methionine

Answer 3

Met + ATP + Mg —> SAMe
Methyl tranfser rxns

Question 4

What is the best predictor of CAD

Answer 4

Homocysteine
(Coronary Artery Disease)

Question 5

What is the function of L-Cysteine

Answer 5

Antioxidant w/ glutathione peroxidase (Se)
Detoxification via bile acids
Antioxidant in <3

Question 6

What rxns does L-methionine function in?

Answer 6

Norepinephrine—> Epinephrine
Lysine —> Tri-methyl-lysine (Carnitine)
Ethanolamine —> Choline
Glycine + Arginine —> Creatine

Question 7

What occurs after the methyl transfer from SAMe involving L-Methionine

Answer 7

SAMe —> Homocysteine (best predictor of CAD)

Question 8

What 2 rxns does L-Cysteine take part in

Answer 8

Glu-Cys-Gly = Glutathione
Cysteine —> Taurine (B6)

Question 9

Where are there high levels of taurine?

Answer 9

Heart