Bourtayre P, Liquier J, Pizzorni L, Taillandier E
Laboratoire de Spectroscopie Biomoléculaire U.F.R. de Médecine, Université Paris XIII Bobigny, France.
J Biomol Struct Dyn. 1987 Aug;5(1):97-104. doi: 10.1080/07391102.1987.10506378.
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.
在高浓度氯化钠和不同量氯化镍存在的情况下，记录了聚d（A-T）·聚d（A-T）溶液的近紫外圆二色光谱、紫外吸收光谱及其一阶导数。将此处给出的结果与在可比条件下聚d（G-C）·聚d（G-C）和聚d（A-C）·聚d（G-T）所得到的结果进行比较，以及聚d（A-T）·聚d（A-T）的红外和拉曼数据，使我们能够将新光谱归属于溶液中聚d（A-T）·聚d（A-T）的Z构象。讨论了在高浓度氯化钠存在下镍离子诱导B→Z相互转化的机制。
