noun
- a basic unit of DNA packaging in eukaryotic cells, consisting of a segment of DNA wound around a core of histone proteins
Usage: biology
Examples
- Each nucleosome contains about 147 base pairs of DNA wrapped around histone proteins.
- The chromatin fiber is made up of repeating nucleosome units.
- Scientists study nucleosome structure to understand gene regulation.
- Nucleosomes help compact DNA so it can fit inside the cell nucleus.
- The spacing between nucleosomes affects gene expression.
- Histone modifications can alter nucleosome stability.