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We have subjected proteins dissociated from chicken erythrocyte or calf thymus chromatin by 0.35 M NaCl to sequential chromatography on columns containing immobilized double-stranded DNA and single-stranded DNA. At 0.2 M NaCl, 1 mM Tris . Cl (pH 7.5), the high molecular weight, high mobility group proteins (HMG-1, HMG-2, and HMG-E), were not retained by double-stranded DNA columns, but were retained by single-stranded DNA columns. Thus, in that solvent, those proteins exhibit selective affinity for single-stranded DNA. This suggests that the functions of the high molecular weight, high mobility group proteins might involve destabilizing the DNA double helix by virtue of their preferential affinity for single-stranded DNA.
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J L Fishback, and
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P J Isackson, and
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P J Isackson, and
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G R Reeck
November 1982,
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P J Isackson, and
J L Fishback, and
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P J Isackson, and
J L Fishback, and
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