Histones

{
  "id": "MLC-T-CHM-005318",
  "term": "Histones",
  "field": "Chemistry",
  "definition": "A family of small, basic proteins found in the nuclei of eukaryotic cells, responsible for packaging deoxyribonucleic acid (DNA) into structural units called nucleosomes. These proteins have a high content of positively charged amino acids, which allows them to bind tightly to the negatively charged DNA. There are five main classes of histones: H1, H2A, H2B, H3, and H4.",
  "subject": "Chemistry and the Environment",
  "see_also": [
    "chromosome",
    "proteins"
  ],
  "references": [
    "PAC, 1992, 64, 143. 'Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992)' on page 156 (https://doi.org/10.1351/pac199264010143)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/histones/"
}