Gatti C, Houssier C, Fredericq E. Interaction of ethidium bromide with ribosomes. Absorption, fluorescence, circular dichroism and sedimentation studies.
BIOCHIMICA ET BIOPHYSICA ACTA 1977;
476:65-75. [PMID:
403949 DOI:
10.1016/0005-2787(77)90286-6]
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Abstract
It is shown in this work that the binding of ethidium bromide to yeast ribosomes occurs through intercalation in the double-stranded rRNA regions and produces changes in the ribosomes structure, yielding unfolded subparticles, and even partial separation of proteins from rRNA at very high binding ratios. The addition of Mg2+ prevents these structural changes, probably by partial inhibition of the dye binding.
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