What is the structure of promoters for RNA polymerase

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.