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Modification of the lysine residues of histones H1 and H5: Effects on structure and on the binding to chromatin

AuthorsJordano, Juan ; Barbero, J.L.; Montero, F.; Palacián, Enrique
Issue Date1985
PublisherKluwer Academic Publishers
CitationMolecular Biology Reports 10(3): 147-151 (1985)
AbstractThe extensive modification of histone H1 from calf thymus with the amino-group reagent dimethylmaleic anhydride (over 35 lysine residues modified per molecule) produces no effect on its secondary structure detectable by circular dichroism (far UV). Fluorescence and circular dichroism (near-UV) of the modified histone show variations in the local environment of its sole tyrosine residue. These changes are reversed on regeneration of the modified amino groups. While histone H1 is easily dissociated with this reagent from calf thymus or chicken erythrocyte chromatin, a much stronger treatment is needed to liberate histone H5 from erythrocyte chromatin. This difference appears to be related to the higher arginine content of histone H5.
Identifiersdoi: 10.1007/BF00778520
issn: 0301-4851
e-issn: 1573-4978
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