The structure of promoters for RNA polymerase I, II and III of eukaryotes

/in /by

How do actinomycin D, rifampicin and -amanitin block transcription? Indicate if they
are effective against bacteria, eukaryotes or both. What is the structure of promoters for RNA polymerase I, II and III of eukaryotes? What are kinetic and nucleolytic proofreading and how are they used? Explain your answer in detail.