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Bacterial chromatin

Andrew Travers1, Georgi Muskhelishvili

  • 1MRC Laboratory of Molecular Biology, Hills Road, Cambridge, CB2 2QH, UK. aat@mrc-lmb.cam.ac.uk

Current Opinion in Genetics & Development
|August 16, 2005
PubMed

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Each human somatic cell contains 6 billion base pairs of DNA. Each base pair is 0.34 nm long, meaning each diploid cell contains a staggering 2 meters of DNA. This long DNA strand is packed inside a nucleus measuring only 10-20 microns in diameter with the help of specialized DNA-binding proteins called histones. Together they form a compact DNA-protein complex called chromatin. The chromatin is further compacted into higher-order structures. The highest level of compaction is achieved during...
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Each human somatic cell contains 6 billion base-pairs of DNA. Each base-pair is 0.34 nm long, which means that each diploid cell contains a staggering 2 meters of DNA. How is such a long DNA strand packed inside a nucleus measuring only 10 - 20 microns in diameter? 
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