What are the donor atoms involved in Aspartame-Cu(II) binding? A) Nitrogen atom of alpha amine group of Aspartic acid and an oxygen atom of alpha carboxyilic acid group of Aspartic acid B) Nitrogen atom of alpha amine group of Phenyl alanine methyl ester and an oxygen atom of alpha carboxyilic acid group of Aspartic acid C) Nitrogen atom of alpha amine group of Aspartic acid and an oxygen atom of alpha carboxyilic acid group of Phenyl alanine methyl ester D) Oxygen atoms of the dipeptide Aspartame E) Nitrogen atom of alpha amine group of Aspartic acid and an oxygen atom of carboxyilic acid group of the R group of Aspartic acid

a) Write the catalytic mechanistic steps used in the urea cycle. If transamination is required, showonly the net reaction of this step.b) Where do the 2 nitrogen atoms and the 1 carbon atom that make the final product come from?

Which step is catalyzed by the enzyme responsible for the Met 2 mutant? (picture attached) A) homoserine → cysteine B) cysteine → cystathionine C) cystathionine → homocysteine D) homocysteine → methionine E) methionine → homoserine

What are the structural differences between bilirubin and urobilin? (Select all that apply.) O Ring is opened in the first compound, but is not in the second compound. Several methylene bridges are reduced in the second compound. O Iron atom is absent in the second compound, but is present in the first compound. The central methylene bridge is reduced in the second compound, but is not in the first compound. O Ring is opened in the second compound, but is not in the first compound. Some vinyl groups are reduced into ethyl groups in the second compound. The central methylene bridge is oxidised in the second compound, but is not in the first compound. O Some vinyl groups are reduced into ethyl groups in the first compound.