Abstract
WE have prepared complexes of calf thymus DNA with whole histone, with individual histone fractions and with whole histone and acidic chromosomal proteins from the same tissue by taking up the components in 5 M urea, 2 M NaCl and gradually removing the urea and salt1. These nudeoproteins were examined in a “Philips EM 300” electron microscope after phosphotungstate-uranyl acetate staining2; their template activities for RNA synthesis by Escherichia coli DNA-dependent RNA polymerase were compared; their protein3 and DNA4 contents were measured and the fraction of total DNA phosphate groups free to bind basic dye5 was estimated.
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PAUL, J., MORE, I. Properties of Reconstituted Chromatin and Nucleohistone Complexes. Nature New Biology 239, 134–135 (1972). https://doi.org/10.1038/newbio239134a0
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DOI: https://doi.org/10.1038/newbio239134a0
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