SPATIAL WRITHING OF DNA LOOPS RESULTING FROM AXIAL TWIST  

作　　者：郝鸣鸿 

机构地区：[1]Institute of Molecular Science, Shanxi University, Taiyuan 030006, PRC

出　　处：《Chinese Science Bulletin》1991年第22期1921-1925,共5页

摘　　要：In vivo DNA often appears in supercoiled states. This phenomenon is related to the constraints imposed on DNA structures, such as co-valenced ring closure, protein binding. When a certain amount of supercoiling isconfined in a DNA, the conformation of the molecule may responds in two different ways: either the supercoiling is completely absorbed by the twist of the double helix leaving an unaltered spatial shape: or the supercoiling

关 键 词：DNA STRUCTURAL model SUPERCOILING 

分 类 号：N[自然科学总论]