Skuratovskiĭ I Ia, Volkova L I, Kapitonova K A, Bartenev V N
Biofizika. 1979 Jul-Aug;24(4):750-2.
Coordinates of caesium ions in DNA crystalline B-form were obtained by X-ray study of CsDNA with the use of synchrotron radiation. In conformity with the model that well meets the obtained set of structure factor amplitudes, the cations are located rather close to diad axes lying between the planes of successive nucleotide pairs. The cations in the narrow groove touch DNA surface, while those in the wide groove are rather far from the DNA molecule.
通过使用同步辐射对铯脱氧核糖核酸(CsDNA)进行X射线研究,获得了DNA晶体B型中铯离子的坐标。与最符合所获得的一组结构因子振幅的模型一致,阳离子位于相邻核苷酸对平面之间的二重轴附近。窄沟中的阳离子接触DNA表面,而宽沟中的阳离子则离DNA分子较远。