Histone
Histones are proteins found in the cell nucleus that play a crucial role in organizing and packaging DNA. They help form a structure called nucleosomes, where DNA wraps around histones, allowing it to fit within the cell. This organization is essential for DNA replication and gene expression.
Histones can undergo various chemical modifications, which can influence how tightly or loosely DNA is wrapped around them. These modifications affect gene accessibility and are part of a process known as epigenetics. This means that histones not only help in DNA storage but also play a role in regulating which genes are active or inactive.