Portugal J, Subirana J A
EMBO J. 1985 Sep;4(9):2403-8. doi: 10.1002/j.1460-2075.1985.tb03946.x.
Recently the relationship between the B and C forms of DNA has been questioned. We have found some amino acids and related amines which form complexes with DNA and favour the C form. We have studied such complexes by X-ray diffraction. With some of these counterions the transition between the B and C forms occurs smoothly, whereas in other cases there is a discontinuous transition. We conclude that the C form is a well-defined variant of the B form favoured by some counterions under low humidity conditions.
最近，DNA的B型和C型之间的关系受到了质疑。我们发现了一些能与DNA形成复合物并有利于C型的氨基酸和相关胺类。我们通过X射线衍射研究了这类复合物。对于其中一些抗衡离子，B型和C型之间的转变是平滑的，而在其他情况下则是不连续的转变。我们得出结论，C型是B型的一种明确变体，在低湿度条件下受到一些抗衡离子的青睐。
