This amino acid is regenerated in concert with the conversion of 5-methyltetrahydrofolate totetrahydrofolate in one of two metabolic reactions that vitamin B12 is involved in.
A "reductase A" combats the oxidation of this compound, a major contributing factor to age-related cataracts. An excessamount of this compound in the body leads to a condition whose sufferers' breath, sweat, and urine smell like boiled cabbage.It's not threonine, but this unmodifiÂed amino acid's metabolism can form alpha-ketobutyric acid, which in turn canbe converted to propionyl-CoA. This amino acid is regenerated in concert with the conversion of 5-methyltetrahydrofolate totetrahydrofolate in one of two metabolic reactions that vitamin B12 is involved in. Its "s-adenosyl" derivative names a bacterialriboswitch and is a common co-substrate in methyl group transfers. The immune system often recognizes the formylatedderivative of this amino acid, which is only present in chloroplasts, mitochondria, and bacteria. This amino acid, whose sidechain contains a terminal S-CH3 group, is coded for by the single codon AUG. For 10 points, name this amino acid whichmarks where protein synthesis begins.
A "reductase A" combats the oxidation of this compound, a major contributing factor to age-related cataracts.
methionine [or m]