Histone proteins are rich in a. Tryptophan, Lysine b. Arginine, Lysine c. Histidine, Arginine d. Histidine, Tryptophan
Option B Nucleosomes are the basic unit of DNA packaging which consists of a segment of DNA wrapped in sequence around eight histone protein core. Histones are small alkaline proteins which have a high amount of basic amino acids (arginine and lysine). So, the correct answer is 'Arginine and lysine'.
