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chromatin

File:Chromatin_Structures.png · Wikimedia Commons · See Wikimedia Commons

EntityQ180951· pop 58· linked from 1,007 articles

Also known as GO:0000785

thumb|358x358px|The major structures in DNA compaction: DNA, the [[nucleosome, the 11 nm beads on a string chromatin fibre and the metaphase chromosome.]]

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Chromatin is the material made of DNA wound tightly around proteins, which allows the long strands of DNA to fit inside cells and be organized into a compact form. It matters because this packaging system controls which genes are accessible and active in a cell, influencing how cells function and develop.

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30nm Chromatin Structures.png
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Chromatin
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~26 min read

Article

27 sections
Contents
  • Basic chromatin structure
  • Nucleosomes
  • Historical 30-nm fiber model
  • Three-dimensional genome organization
  • Chromatin loops
  • TADs
  • Chromatin compartments
  • Chromosome territories
  • Chromatin dynamics and regulation
  • Histone modifications
  • Chromatin remodeling
  • Transcriptional bursting
  • Structure of DNA
  • Chromatin during the cell cycle
  • Spatial organization of chromatin in the cell nucleus
  • Cell-cycle dependent structural organization
  • Specialized chromatin states
  • Sperm chromatin
  • Chromatin and DNA repair
  • Methods to study chromatin
  • Physical and topological properties
  • Chromatin knots
  • See also
  • Notes
  • References
  • Additional sources
  • External links

thumb|358x358px|The major structures in DNA compaction: DNA, the [[nucleosome, the 11 nm beads on a string chromatin fibre and the metaphase chromosome.]]

Chromatin is a complex of DNA and protein responsible for condensing and packaging chromosomal DNA. Chromatin is found in both bacterial and eukaryotic cells.This article deals almost exclusively with eukaryotic chromatin.

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