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Histones are alkaline (basic pH) proteins. They are found inside the nucleus of eukaryotic cells. Their purpose is to package DNA into structural units called nucleosomes.They are the main proteins in chromatin (a combination of DNA and protein), which makes up the contents of a cell nucleus.2A, H2B, H3, and H4 are the core histones, and H1 and H5 are the linker histones. The core histones form the center of the nucleosome, hence the term 'core'. The linker histones are found at the entrance and exit sites of the nucleosome and lock the DNA in place, hence the term 'linker'.
The main molecules in charge of that are proteins called histones. They have alkali features and positive charge, and so, they neutralize these negative charges. On the other hand, that's not the main point of histones. Histones play a really important key role in the regulation and compaction of DNA within the nucleus of the cell, and are important targets of diverse molecules that want to alter DNA structure and function: Lehninger 5th edition.Figure 24-26.