Histones are enriched with -
- Phenylalanine & Leucine
- Phenylalanine & Arginine
- Lysine & Arginine
- Leucine & Lysine
Answer
(3) Lysine & Arginine
Solution
Histones are positively charged, basic proteins because they are rich in the basic amino acid residues lysine and arginine, whose side chains carry positive charges.
Answer: (3)