The Volume Phase Transitions of Chemically Cross-Linked DNA Gels Induced by Salts: Na+ and Mg2+ Ions. II.
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Accession number;01A0510881
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| Title;The Volume Phase Transitions of Chemically Cross-Linked DNA Gels Induced by Salts: Na+ and Mg2+ Ions. II. |
| Author;
TANAKA S
(Univ. Ryukyus, Okinawa, Jpn)
TAKUSHI E
(Univ. Ryukyus, Okinawa, Jpn)
YONEKURA N
(Univ. Ryukyus, Okinawa, Jpn)
MIYAGI Y
(Univ. Ryukyus, Okinawa, Jpn)
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Journal Title;Bulletin of the College of Science, University of the Ryukyus
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Journal Code:S0995A
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ISSN:0286-9640
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VOL.;NO.71;PAGE.15-20(2001)
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| Figure&Table&Reference;FIG.6, REF.7 |
| Pub. Country;Japan |
| Language;English |
| Abstract;A chemically cross-linked DNA gel in acetone-water mixtures involving salt is demonstrated to bring about the volume phase transition with varying the salt concentration. The salt concentration at the discrete volume change depends strongly on the valency of the positive salt ion in the solution. The transition salt concentration for NaCl is several hundred times larger than the transition MgCl2 concentration. For NaCl, the first order phase transition is observed at the NaCl concentration of 4*10-2mol/l for the 60% acetone-water mixtures. For MgCl2, the discrete volume change are observed at 8*10-5mol/l of MgCl2 concentration for 50% acetone-ware mixtures, 7*10-5mol/l for 60%, respectively. (author abst.) |
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