supercoil
1. DNA supercoil
DNA超螺旋
2. plectonemic supercoil
同向超螺旋
3. positive supercoil
正超螺旋
4. interwound supercoil
盘绕式超螺旋
5. negative supercoil
负超螺旋
6. transcriptional-generated supercoil
转录生成(的)超螺旋
7. transcription-generated supercoil
转录生成超螺旋