Talking Glossary of Genetic Terms
William Gahl, M.D., Ph.D. defines Histone
Histone
HIS tohn
A histone is a protein that provides structural support to a chromosome. In order for very long DNA molecules to fit into the cell nucleus, they wrap around complexes of histone proteins, giving the chromosome a more compact shape. Some variants of histones are associated with the regulation of gene expression.
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