Which among the following amino acids absorbs UV light?: (A) Leucine, (B) Lysine, (C) Tyrosine, (D) Valine
Answer is C. Ans. C. TyrosineAmino acids which absorb 250-290 nm UV light are: phenylalanine, tyrosine, tryptophan (aromatic amino acids)Important biochemical & the wavelength of light which they absorb:a. Nucleotides - 260 nmb. Aromatic amino acids - 250-290 nmc. NADH - 340 nmd. Porphyrin -400 nm (Soret band)