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On the application of polyelectrolyte limiting laws to the helix–coil transition of DNA. IV. Dependence of helix stability on the concentration of divalent metal ions

✍ Scribed by Nancy De Marky; Gerald S. Manning

Book ID
118282335
Publisher
Wiley (John Wiley & Sons)
Year
1976
Tongue
English
Weight
613 KB
Volume
15
Category
Article
ISSN
0006-3525

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📜 SIMILAR VOLUMES

On the application of polyelectrolyte li
On the application of polyelectrolyte limiting laws to the helix–coil transition of DNA. III. Dependence of helix stability on excess univalent salt and on polynucleotide phosphate concentration for variable equivalent ratios of divalent metal ion to phosphate
✍ Nancy De Marky; Gerald S. Manning 📂 Article 📅 1975 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 819 KB

## Abstract Using the free energy difference between double‐helix and random‐coil forms of DNA as a measure of the stability of the double helix, we calculate the dependence of the stability on excess univalent cation concentration and on polynucleotide phosphate concentration, both as functions of

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✍ Gerald S. Manning 📂 Article 📅 1972 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 758 KB

A general theory of polyelectrolyte solutions is here used to calculate the differences in Gibbs free energy, enthalpy, and entropy between the coil and helix forms of DNA a t any temperature and salt concentration. The salt has univalent cations and is assumed present in excess over the base concen

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✍ Gerald S. Manning 📂 Article 📅 1976 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 682 KB

New Brunswick, New Jersey 08903 ## Synopsis The bimolecular rate constant k z for the association of complementary polynucleotide strands has been observed to increase strongly with increasing ionic strength-in fact, proportional to its third or fourth power. This effect is here interpreted quant

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On the Application of Polyelectrolyte “Limiting Laws” to the Helix-Coil Transition of DNA. II. The Effect of Mg++ Counterions
✍ Gerald S. Manning 📂 Article 📅 1972 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 294 KB 👁 2 views

The techniques of the previous article are here applied to the case for which the solution contains, in addition to excess uni-univalent salt, one equivalent of divalent counterions per mole nucleotide. In agreement with the melting temperature measurements of Dove and Davidson for Mg++, it is predi

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✍ Gerald S. Manning 📂 Article 📅 1976 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 391 KB 👁 2 views

## Abstract It is concluded on the basis of comparison of polyelectrolyte theory with published data that the mean phosphate spacing __b__ along the contour axis of an unfolded polynucleotide single strand is in the range 3–4 Å (polyelectrolyte parameter ξ ≈ 2), regardless of temperature, base comp

Magnesium ion effect on the helix-coil t
Magnesium ion effect on the helix-coil transition of DNA
✍ Yu. P. Blagoi; V. A. Sorokin; V. A. Valeyev; S. A. Khomenko; G. O. Gladchenko 📂 Article 📅 1978 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 958 KB

## Abstract The effect of magnesium ions on the parameters of the DNA helix‐coil transition has been studied for the concentration range 10^−6^–10^−1^__M__ at the ionic strengths of 10^−3^__M__ Na^+^. Special attention has been given to the region of low ion concentrations and to the effect of poly