DNA nucleosome, molecular model

DNA nucleosome, molecular model

G110/1055

Rights Managed

Caption

DNA nucleosome. Computer model based on X-ray diffraction data of the structure of a nucleosome. A nucleosome is a complex of DNA (deoxyribonucleic acid, red, orange and yellow) and proteins called histones (blue and green helices). The nucleosomes form "beads on a string" of DNA, which are coiled in turn to form a fibre of chromatin, the form in which DNA is stored inside cell nuclei. The structure of chromatin allows huge lengths of DNA to be stored in a very small volume. During DNA replication or the expression of genes in the DNA, the chromatin unwinds into a form that allows regulatory proteins and RNA complexes access to the genes.

Release details

Model release not required. Property release not required.

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