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  • Title: Z form of poly d(A-T).poly d(A-T) in solution studied by CD and UV spectroscopies.
    Author: Bourtayre P, Liquier J, Pizzorni L, Taillandier E.
    Journal: J Biomol Struct Dyn; 1987 Aug; 5(1):97-104. PubMed ID: 3271471.
    Abstract:
    Near UV CD spectra, UV absorption spectra and their first derivatives have been recorded on poly d(A-T).poly d(A-T) solutions in presence of high NaCl concentration and various amounts of NiCl2. Comparison of the results presented here with those obtained for poly d(G-C).poly d(G-C) and poly d(A-C).poly d(G-T) in comparable conditions, and the I.R. and Raman data on poly d(A-T).poly d(A-T), allows us to assign the new spectra to the Z conformation of poly d(A-T).poly d(A-T) in solution. The mechanism by which nickel ions induce the B----Z interconversion in the presence of high NaCl concentration is discussed.
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