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Nucleosomes are how DNA is packaged in the Nucleus. The DNA in this model is wrapped around 4 histone proteins.
Original Source data:
X-ray structure of a tetranucleosome and its implications for the chromatin fibre.
Schalch, T., Duda, S., Sargent, D.F., Richmond, T.J.
Journal: (2005) Nature 436: 138-141
DNA in eukaryotic chromosomes is organized in arrays of nucleosomes compacted into chromatin fibres. This higher-order structure of nucleosomes is the substrate for DNA replication, recombination, transcription and repair. Although the structure of the nucleosome core is known at near-atomic... [ Read More & Search PubMed Abstracts ]