题目

真核生物中有转录泡的概念吗?

提问时间：2020-08-10

答案

有.转录泡是指与RNA聚合酶结合的DNA局部解链区.原核和真核生物的DNA在进行转录活动时都是局部解链,形成转录泡结构.
转录泡（Transcription bubble）的英文解释：
is a molecular structure that occurs during the transcription or replication of DNA when DNA helicase and DNA topoisomerase "unzip" the DNA double strand. DNA polymerase or RNA polymerase (Main Articles: DNA replication, transcription) may then bind to the exposed DNA and begin synthesizing a new strand of DNA or RNA. As DNA and/or RNA polymerase progresses down the DNA strand in the 5' to 3' direction, more of the DNA double strand is unwound, creating a replication or transcription bubble in the process that may be seen with specialized staining techniques and microscopy.