👉 Histones are a group of proteins that are found in the nuclear envelope and are involved in the regulation of chromatin structure and function. They play an important role in gene expression by binding to DNA and regulating transcription, which is the process by which genes are turned on or off during cell cycle progression. Histones can be divided into two main types: H1 and H2B. H1 histones are found in the nucleus and bind to DNA; they are responsible for protecting the chromatin