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Normal-Mode calculation for methylated Z-DNA poly(dG-m5dC) · (dG-m5dC)

✍ Scribed by X. M. Hua; E. W. Prohofsky

Publisher
Wiley (John Wiley & Sons)
Year
1988
Tongue
English
Weight
448 KB
Volume
27
Category
Article
ISSN
0006-3525

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✦ Synopsis

Normal modes of methylated Z-DNA poly(dG-m5dC) . (dG-m5dC) are computed by helix-lattice dynamics. Good agreement with Raman spectral data is obtained. We discuss improvements in the formulation of the problem that allow us to greatly reduce the size of the matrix used. This leads to greatly reduced calculation times. The improvements come from using knowledge of the C, and time-reversal symmetries.

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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

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✍ Michael J. Behe 📂 Article 📅 1986 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 237 KB

## Synopsis The vacuum CD spectra of poly(rGdC).poly(rGdC) and poly(dG-m 5dC).poly(dG-m5dC) have been obtained for the low-salt Zconformations of both polymers. The spectra are very similar to those for the high-salt Zforms. This behavior is consistent with the suggestion that the lowand high-salt