A tripeptide contains lysine (R= -(CH₂)4NH2), phenylalanine (R= -CH₂C6H5) and glycine (R= -H). It was found that the tripeptide reacts with 2 moles of DNFB to give compound A. When compound A was treated with SOCI₂, glycine was activated. When hydrolyzed, both NH₂ groups of lysine were found to be DNP-labelled. What is the structure of the tripeptide? Select one: O H O (CH₂)4NH2 CH NH CH (CH2)2NH2 CH O O O H₂N H₂N H₂N H₂N NH CH CH,Ph CH H O= NH NH COOH CH,Ph CH H CH C (CH₂)2NH2 CH NH CH NH COOH CH,Ph CH,Ph H fill CH NH CH C CH NH COOH (CH₂)2NH2 COOH
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.
Step by step
Solved in 3 steps with 3 images
