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Reconstitution of nucleosomes containing dinitrophenylated histones.

ABSTRACT: Histone octamers of purified monomer nucleosomes were labelled with [3H]dinitrofluorobenzene. Authentic 11 S nucleosomes were reconstituted in vitro from a mixture of [3H]dinitrophenylated histones and excess unlabelled monomer nucleosomes. The reconstituted nucleosomes were found to contain [3H]dinitrophenylated histones H2a and H2b but not [3H]dinitrophenylated histones H3 and H4. Approx. 83% of [3H]dinitrophenylated nucleosomes were immunoprecipitable with anti-dinitrophenyl immunoglobulin and Staphylococcus aureus. These results demonstrate that histones H2a and H2b contain dinitrofluorobenzene-reactive groups that can be modified without destroying their ability to participate in nucleosome formation in vitro.

SUBMITTER: MacDonald HS 

PROVIDER: S-EPMC1144816 | biostudies-other | 1985 Apr

REPOSITORIES: biostudies-other

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