Nucleosome Structure and DNA Packaging Levels

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About This MicroSim

Chapter 4: Genome Structure and Chromatin Organization

Library: p5.js

Type: Interactive diagram sim-id: nucleosome-packaging
Library: p5.js
Status: Specified

An interactive diagram showing the hierarchical levels of DNA packaging: bare DNA double helix (2nm) wrapping around the histone octamer to form a nucleosome (11nm), the "beads on a string" arrangement, the 30nm chromatin fiber, looped domains (300nm), and metaphase chromosome (1400nm). Users can click through each level to see a zoomed view. Labels indicate compaction ratios at each level. The histone octamer should show H2A, H2B, H3, and H4 subunits in distinct colors, with H1 linker histone visible between nucleosomes.