Steps in RNA synthesis 1:Initiation Initiate Terminate Promoter The initiation and termination sites are specific nucleotide sequences on region the DNA.初始化位点与终止点为特定序列 5' 3 1 Gene 5 RNA polymerase (core enzyme) Sigma aids in recognition of Sigma factor promoter and initiation site 5 3 3 5 The sigma factor allows RNA polymerase to recognize the initiation site(the promoter'）.启动子的识别Steps in RNA synthesis 1: Initiation The initiation and termination sites are specific nucleotide sequences on the DNA.初始化位点与终止点为特定序列 The sigma factor allows RNA polymerase to recognize the initiation site (the promoter). 启动子的识别