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Tris

4G. 4G. 4G. 4G. 4G. 4G. 4G. 4G. 4G. 4G. 4G. 4G. Tris. Na. K. Supplementary Figure 1.

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Tris

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  1. 4G 4G 4G 4G 4G 4G 4G 4G 4G 4G 4G 4G Tris Na K Supplementary Figure 1

  2. Supplementary Figure 1 Legend. Densitometry of T2G4double DMS dimethyl sulfate footprinting. Samples were incubated in the presence or absence of 100 mM NaCl (open circles) and 100 mM KCl (closed circles) in 20 mM Tris-HCl buffer solution (pH 7.4) at 37 C for 1 hour and then probed with 2 μl 10% dimethyl sulfate (DMS) in ethanol for 15 min at 15 oC. Runs of four guanines on the gels are marked with “4G”. For quantification, band intensities were normalized with control samples (Tris-HCl buffer), and inverse values are presented at the lower panel.

  3. OsO4 DEPC DMS 1 2 3 4 5 6 7 8 9 10 11 12 + + + + + + + + + + + + - + - - - + - - - + - - - - + + - - + + - - + + - - - + - - - + - - - + Tris 20mM NaCl 20mM KCl 20mM Telomestatin 10mcM Supplementary Figure 2

  4. Supplementary Figure 2 Legend. Chemical probing of plasmid with BCL2 insert. Sequence of G-strand is the following - 5’- TTTCCTTCCGGGCCAGGGAGCGGGGCGGAGGGGGTTTCCTT-3’. Plasmids were incubated in the presence or absence of 100 mM KCl, 100 mM NaCl and 10 µM Telomestatin in 20 mM Tris-HCl buffer solution (pH 7.4) at 37C for 1 hour. Samples contained 1 μg of plasmid in 40 mM TE buffer (pH 7.4) with or without 100 mM KCl and 100 mM NaCl were chemically modified in the total volume of 50 μl with 2.5mM OsO4 plus 2.5 mM 2.2’-dipyridyl disulfide for 5 min at room temperature, 2 μl DEPC for 5 min at room temperature, 2 μl 10% DMS in ethanol for 15 min at 15 oC.

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