Nucleosome - Wikipedia, the free encyclopedia
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Nucleosomes form the fundamental repeating units of eukaryotic chromatin, which is used to pack the large eukaryotic genomes into the nucleus while still ensuring appropriate access to it (in mammali...
en.wikipedia.org/wiki/Nucleosome
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Legend: Nucleosome: Subunit of chromatin composed of a short length of DNA wrapped around a core of histone proteins. The human genome contains about 3 billion nucleotide pairs organized as 23 chromosomes pairs.
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www.accessexcellence.org/AB/GG/nucleosome.html
www.accessexcellence.org/AB/GG/nucleosome.html
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The job of the nucleosome is paradoxical, requiring it to perform two opposite functions simultaneously. On one hand, nucleosomes must be stable, forming tight, sheltering structures that compact the DNA and keep it from harm.
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www.rcsb.org/pdb/molecules/pdb7_1.html
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The image shows a nucleosome consisting of 146 nucleotide pairs of DNA wrapped around a histone octamer. The protein structures are approximately 80% complete; some sequences at the N- and C-termini that extend outwards from the particle are not shown.
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arapaho.nsuok.edu/~biology/Tutorials/Nucleosome.htm
arapaho.nsuok.edu/~biology/Tutorials/Nucleosome.htm
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Introduction - This script shows the structure nucleosome core particle (Based on 1aoi.pdb, K. Luger et al., Nature 389 251 (1997)). ... Here is the nucleosome core particle. The 8 core proteins, 2 copies each of histones H2A, H2B, H3 and H4, are reperersnted in cartoon format. The DNA that wraps around the proteins is...
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www.biochem.arizona.edu/classes/bioc462/462a/NOTES/Nucl...
www.biochem.arizona.edu/classes/bioc462/462a/NOTES/Nucleic_Acids/nucleosome.html
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Nucleosome A. Probing the structure of the histone octamer and chromatosome 1. General features a. core histones: H2A, H2B, H3, and H4=octamer table b. octamer +DNA = nucleosome core particle c. nucleosomal core particle + linker histone = chromatosome b. linker histone (H1 H5, ...) can be removed by 0.5 M NaCl figure...
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www.siumed.edu/~bbartholomew/course_material/nucleosome...
www.siumed.edu/~bbartholomew/course_material/nucleosome.html
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Website for computing nucleosome formation energies and nucleosome probabilities and occupancies, both in presence and absence of other DNA-binding factors (such as transcription factors) ... Welcome to the Nucleosome Explorer website...
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nucleosome.rockefeller.edu/
nucleosome.rockefeller.edu/
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Online Macromolecular Musuem ... The H3-H4 heterodimers pair to form a tetramer through interactions of a four-helix bundle (alpha2 and alpha3 of H3 from each dimer). The association of this (H3-H4)2 tetramer with DNA is the first step in nucleosome assembly.
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www.callutheran.edu/BioDev/omm/jmol/nucleosome/nucleoso...
www.callutheran.edu/BioDev/omm/jmol/nucleosome/nucleosome.html
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[nōṓklē-ə-sōḿ, nyōṓ-]
