The B-Z conformational transition and aggregation of poly[d(G-C)] induced by moderate concentrations of Mg(ClO 4) 2

Mg(ClO 4) 2 induces the cooperative B-to-Z transition of poly[d(G-C)]; the salt concentration at the midpoint is 0.26 M. A comparison with previous data for NaCl, MgCl 2 and NaClO 4 (F.M. Pohl and T.M. Jovin, J. Mol. Biol. 67 (1972) 375) indicates that Mg(ClO 4) 2 is more effective than would be ant...

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