Simplify the following text for a Grade 10 native English-speaking person.
Original: Although the nucleosome is a very stable protein-DNA complex , it is not static and has been shown to undergo a number of different structural re-arrangements including nucleosome sliding and DNA site exposure .
Simplified: Although the nucleosome is a very stable protein-DNA complex , it is not static . It undergoes some structural re-arrangements , such as nucleosome sliding and DNA site exposure .