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. 1976 May;3(5):1263–1275. doi: 10.1093/nar/3.5.1263

Histone dimers: a fundamental unit in histone assembly.

R Sperling, M Bustin
PMCID: PMC342985  PMID: 940769

Abstract

Histone interactions which occur, at moderate ionic strengths, when several types of purified, renatured histones are mixed at equimolar ratios have been studied. The four histones H2A,H2B,H3 and H4 complex and form dimers. Histone H1 does not interact with the other four histone types and does not form dimers. Mixing of single histone species with preformed histone pairs as well as mixing of two different types of histone pairs, leads to exchange of histones among the pairs and formation of dimers. No trimers are formed. The dimers are in equilibrium with high-molecular weight histone structures. The results indicate that histone dimers may serve as a stable intermediate in histone assembly. Because each histone type (except H1) can interact with itself as well as with each of the other three histone types we suggest that each histone type should be considered as an interchangeable subunit of a multichain protein in which the dimer species is the most stable structure.

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Selected References

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