Minor histone 2A variants and ubiquinated forms in the native H2A:H2B dimer

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Science  29 Jul 1983:
Vol. 221, Issue 4609, pp. 468-470
DOI: 10.1126/science.6306766


Histone octamers from calf thymus were separated into (H3:H4)2 tetramers and H2A:H2B dimers by chromatography through Sephadex G100. The tetramers and dimers were analyzed for variants, ubiquitin adducts, and proteolyzed forms. The minor histone variants H2A.X and H2A.Z were found to be associated with histone H2B as H2A.X:H2B and H2A.Z:H2B dimers, respectively. Ubiquitin adducts of the H2A's and H2B were also present in H2A:H2B dimers.