File:Basic units of chromatin structure.svg
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[edit]DescriptionBasic units of chromatin structure.svg |
English: The histone octamer is formed from two subunits each of the four core histones. The four H3 and H4 subunits form a tightly packed tetramer that associates with two H2A/H2B dimers to form each octamer. About 147 bp of DNA is wrapped around the octamer to form a nucleosome. Nucleosomes can be arrayed in the loosely packed beads-on-a-string form of chromatin, but are generally more tightly packaged into the 30-nm fiber. Fiber formation requires histone tails and additional proteins, neither of which is shown here.[1] |
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Source | The Cell Cycle. Principles of Control. | |||
Author | David O Morgan | |||
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current | 18:03, 1 May 2020 | 512 × 1,152 (234 KB) | Rob Hurt (talk | contribs) | Uploaded a work by David O Morgan from The Cell Cycle. Principles of Control. with UploadWizard |
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