Phase surface of the B–Z equilibrium for poly[d(G–C)] solution in coordinates: non-electrolyte fraction, ionic strength, temperature
DOI:
https://doi.org/10.7124/bc.000226Abstract
A fragment of the B and Z interfaces of poly[d(G–C)] within 45–58% ethanol, 10–45 °C and 0.5–3 mM NaCl is a plane. A projection (ethanol fraction, ionic strength) testifies to the occurrence of the reverse Z→B transition with an ionic strength increase, which was predicted by a polyelectrolyte theory but up to now was not observed with poly [d(Q-C)]. Using the polyelecfrolyte model the projection (temperature, ionic strength) permits estimating enthalpy of the Z–B transition: ΔHBZ = – 1.4 kcal/mol.References
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