One Nucleosome

DNA wound around a core of two each of histones H2A, H2B, H3 and H4

(Structure displays using JSmol and HTML5. If you don't see a structure try an alternate browser.)

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Use the commands above to see alternate views of the structure. You can manipulate the structure directly with the mouse on a computer or with your finger on a touch device (see Brief JSmol Instructions).

The image above shows the structure of a single nucleosome of the African clawed frog (Xenopus laevis). Most of the tails of the histone proteins are absent from the structure because they are inconsistently organized and so were not resolved in the structure, or because they were eliminated from the proteins prior to crystalization so that their poorly organized structure would not prevent crystal formation.

Copyright© Charles S. Gasser, 2010, 2013

Dept. of Molecular and Cellular Biology at the University of California, Davis.