抄録
The effects of DNA topoisomerases isolated from cauliflower inflorescence on in vitro RNA synthesis have been investigated using Escherichia coli RNA polymerase. When supercoiled pBR322 and pCaMV-S DNAs were used as the template, RNA synthesizing activity was fairly reduced by an addition of DNA topoisomerases. Whereas, a remarkable stimulation of RNA synthesis was observed when isolated cauliflower chromatin was used as the template by means of an addition of DNA topoisomerases.