Chromatin

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A complex of DNA, histones and nonhistone chromosomal proteins, which condense to make up the chromosomes found in eukaryotic nuclei [1]. 145 bp of DNA is wound into a left-handed superhelix [2] around 8 histones with up to 80 bp linking to the next "bead on a string". Each of these repeating units is a nucleosome.

Chromatin is formed to strengthen the DNA and decrease it's volume in the cell, thus preventing damage.

References

  1. ↑ Alberts, B. et al., 2007. Molecular Biology of the Cell. 5th ed. s.l.:Garland Science. p.G:7
  2. ↑ Berg, Jeremy M., et al. 2011. Biochemistry. 7th Edition. Palgrave MacMillan. p.976


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