DNA supercoiling helps the cell pack long chromosomes into a small nucleus.
DNA的超螺旋帮助细胞把很长的染色体压缩进很小的细胞核里。
During transcription, enzymes relieve supercoiling ahead of RNA polymerase to prevent the DNA from becoming overly twisted.
在转录过程中,酶会解除RNA聚合酶前方的超螺旋,以防DNA过度扭曲。