Question

Histones are rich in which of the following amino acids?

• A. Arginine, Valine
• B. Arginine, Lysine
• C. Valine, Lysine
• D. Arginine, Phenylalanine

Answer 1

The correct option is B Arginine, Lysine

Histones octamer is a set of sub units which possess positively charged proteins. These proteins are made up of basic amino acid residues with positively charged side chains and due to this the histones are positively charged. Basic amino acids that are present in the histone are arginine and lysine.
Valine and phenylalanine are non-polar amino acids with hydrophobic side chains.