Question

Are histones found in prokaryotes?

Answer 1

Histones:

1. Histones are positively charged basic proteins that contain amino acids such as lysine and arginine.
2. The DNA molecule is wrapped around the histone octamer, resulting in the formation of a structure called ‘nucleosome’.
3. Histones maintain the chromosome shape and regulate gene activity.
4. Prokaryotes are unicellular organisms that lack a true nucleus and membrane-bound cell organelles.
5. Histones are generally not found in prokaryotes. However, Archaea possess histones.
6. Archae are unicellular prokaryotes that are mostly found in harsh habitats. Example: Halobacterium.