转录泡

转录泡泡（Transcription bubble）是在DNA转录过程中，当DNA双链的局部解旋时所形成的分子结构。转录泡泡的大小范围为12-14个碱基对。当RNA聚合酶与启动子结合并导致两条DNA链分离时，就会形成转录泡泡。^[1]它显示了一个未配对的DNA区域，在双螺旋的每条链上都暴露出一小段核苷酸。^[1][2]

A molecular structure composed of unwound and unpaired DNA, where a short stretch of nucleotides are exposed on each strand of the double helix, allowing RNA polymerase binding, and nascent RNA synthesis within this region.

RNA聚合酶

参见

• 转录因子