The iron curtain divides the line between the Western and Eastern part of Europe. In the Eastern part of Europe under the rule of the Soviet Union, Communism was the type of g â¦ overnment practiced.e was talking about the spread of communism in Eastern Europe and said that 'from â¦ Stettin on the Baltic to Trieste on the Adriatic, an Iron Curtain has descended over Europe'. He meant that Europe was now split into two zones-East and West.
Promoter sequences are DNA sequences that define where transcription of a gene by RNA polymerase begins. Promoter sequences are typically located directly upstream or at the 5' end of the transcription initiation site.
The function of a transcription factor is to bring RNA polymerase and the promoter together. It will bind to RNA polymerase and at the same time, associate with the DNA promoter. Transcription factors exist in both prokaryotes and eukaryotes.An example of a prokaryotic transcription factor is the Sigma Factor.. The sigma factor is involved in locating RNA polymerase to the correct location.he promoter region is where RNA polymerase binds to DNA to initiate transcription. Not all promoters will have the same sequence. Strong promoters will have a similar nucleotide sequence as a known consensus sequence. Weak promoters will have a different sequence.