(a) S-Adenosyl methionine, abbreviated SAM, is formed from the amino acid methionine and adenosine triphosphate (ATP). Re-draw ATP to show the full structure of the triphosphate group. NH2 SAM HO,C. SMe PPPO Synthase SAM Methlonine ATP
Carbohydrates
Carbohydrates are the organic compounds that are obtained in foods and living matters in the shape of sugars, cellulose, and starch. The general formula of carbohydrates is Cn(H2O)2. The ratio of H and O present in carbohydrates is identical to water.
Starch
Starch is a polysaccharide carbohydrate that belongs to the category of polysaccharide carbohydrates.
Mutarotation
The rotation of a particular structure of the chiral compound because of the epimerization is called mutarotation. It is the repercussion of the ring chain tautomerism. In terms of glucose, this can be defined as the modification in the equilibrium of the α- and β- glucose anomers upon its dissolution in the solvent water. This process is usually seen in the chemistry of carbohydrates.
L Sugar
A chemical compound that is represented with a molecular formula C6H12O6 is called L-(-) sugar. At the carbon’s 5th position, the hydroxyl group is placed to the compound’s left and therefore the sugar is represented as L(-)-sugar. It is capable of rotating the polarized light’s plane in the direction anticlockwise. L isomers are one of the 2 isomers formed by the configurational stereochemistry of the carbohydrates.
![(a) S-Adenosyl methionine, abbreviated SAM, is formed from the amino acid methionine and
adenosine triphosphate (ATP).
Re-draw ATP to show the full structure of the triphosphate
group.
NH2
SAM
Synthase
HO,C SMe
PPPO
SAM
Methlonine
ATP
(b) Suggest a curly arrow reaction mechanism for the formation of SAM from methionine and
ATP.
(c) SAM is the co-factor involved in the formation of A from norbelladine. Provide a curly arrow
reaction mechanism for this step.
SAM
HO
methyl transferase
H.
Meo
OH
A
OH
Norbelladine
NMe
NH
steps
Meo
Meo
B O
Galanthamies](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7a3e3f5b-6153-46d3-8029-e1d9f2fe8382%2Fe99009b4-d2f3-4164-ade4-379769057ca8%2Fku4obw8_processed.jpeg&w=3840&q=75)
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