Structure and function of archaeal histones
Fig 2
Overview of the hypernucleosome structure.
HMfB dimers stack to form a continuous, central protein core that wraps the DNA in a left-handed superhelix. Nine HMfB dimers are shown, each dimer in surface mode and in rainbow colors. Numbering indicates position of the nine histone dimers; note that dimer 5 and 6 occlude the view of dimer 7. DNA is in gray and shown as cartoon. Image generated using PDB entry 5T5K [64]. HMfB, Histone B from Methanothermus fervidus; PDB, Protein Data Bank.