Substitution of which amino acid in the place of glycine would result in increase in UV absorption of a protein solution: (A) Lysine, (B) Arginine, (C) Tryptophan, (D) Histidine
Answer is C. Aromatic amino acids (Phenylalanine, Tyrosine, Trytophan) absorb UV light.
Maximum absorption is by, tryptophan.