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Study of the interaction of polynucleotide chains with oligomers by means of chromatography

✍ Scribed by S. E. Bresler; V. M. Chernajenko; E. M. Saminski

Publisher: Wiley (John Wiley & Sons)
Year: 1972
Tongue: English
Weight: 476 KB
Volume: 11
Category: Article
ISSN: 0006-3525
DOI: 10.1002/bip.1972.360110802

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✦ Synopsis

Abstract

A new method of measurement of the binding constant of oligonucleotides with complementary polynucleotide chains was developed using a gel filtration procedure. Data for complexing of poly U with triplets ApApA are presented and analyzed by means of a simple statistical theory of cooperative adsorption deduced by the Bethe‐Guggenheim method. The complexes are triple, they contain two polymer chains bound by oligomers. The energy of stacking is found equal to 1300 cal/mol in fair agreement with earlier data of Ts'o. The energy of binding of a single triplet to both complementary chains is equal to 14,000 cal/mol.

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