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Some aspects of the DNA hypochromic effect theory
Author(s) -
Volkov S. N.
Publication year - 1979
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560160115
Subject(s) - chemistry , dna , interpretation (philosophy) , oscillator strength , helicity , perturbation theory (quantum mechanics) , molecular physics , quantum mechanics , physics , spectral line , biochemistry , computer science , programming language
The expressions for the polymer absorption band hypochromism and oscillator strength are studied in frames of the first‐order perturbation theory. The physically justified approximations for a polymer hypochromism calculation are indicated. The uniform interpretation of the effect origin is given independently on the approximation used. In frames of the perturbation theory the DNA hypochromism formula is obtained, from which the known experimental dependences of hypochromism on chain length and polymer helicity degree follows directly. The analytic expression of the DNA hypochromism dependence on AT pairs content is obtained. It is established that in most cases for natural DNA the nucleotide sequence does not influence in practice the value of the hypochromic effect.