9.2 Transcription Enzym e movement is catalyzed by RNA polymerase DNA coding strand Rewind ing point Unwinding point Figure 9.4 During transcription, the bubble is maintained within bacterial RNA polymerase which unwinds and rewinds dna. maintains NNA template strand the conditions of the partner and template DNA strands, and synthesizes Catalvtic site RNA RNA hind ing site, 消当Figure 9.4 During transcription, the bubble is maintained within bacterial RNA polymerase, which unwinds and rewinds DNA, maintains the conditions of the partner and template DNA strands, and synthesizes RNA. 9.2 Transcription is catalyzed by RNA polymerase