Terbium(III) induced Z to A transition in poly(dG-m5dC)
✍ Scribed by Dipankar Chatterji
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1988
- Tongue
- English
- Weight
- 217 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0006-3525
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## Abstract The double‐stranded helical complexes of poly(dG‐dC) and of poly(dG‐m^5^dC) are shown to convert from B‐ to Z‐DNA‐type conformations at moderate or low ionic strengths, lower for the 5‐methyl than for the non‐methyl species, in a highly cooperative temperature‐dependent equilibrium. In
Infrared absorption and resonance Raman spectroscopy (RRS) are used to study poly(dG-dC).poly(dG-dC) in two different forms: the right-handed B form a t low ionic strength and the left-handed 2 form a t high ionic strength. The existence of a new electronic absorption band in the 290-300-nm region i
The NaC1-induced transition from B to Z conformation in poly( dG-dC) , covalently modified with benzo (a)pyrene diol epoxides (BPDE) , has been studied by use of flow linear dichroism ( L D ) , CD, and fluorescence spectroscopy. In contrast to unmodified poly( dG-dC), the BPDE-modified polynucleotid