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“Inclusion of 5 mM MgCl2 in the transcription buffer increased the level of compaction of nucleosomal templates and led to a marked inhibition of both transcription initiation and elongation by RNA polymerase III.”
Proceedings of the National Academy of Sciences of the United States of America • 1994 | View Paper
“Side-by-side compaction of 30-nm filaments was suggested to be induced in the MgCl2 concentration range higher than 0.3 mM. Biological significance of the dynamic structure was discussed in connection with the results obtained.”