...Expression Description T7 Constitutive but requires T7 RNA polymerase Promoter from T7 bacteriophage Sp6 Constitutive...control the binding of RNA polymerase to DNA. RNA polymerase transcribes DNA to mRNA which is ultimately ...transcription factors in order for RNA polymerase II (a eukaryote-specific RNA polymerase) to bind to a promoter....contains the RNA polymerase binding site, TATA box, and transcription start site (TSS). RNA polymerase will bind...binding of the RNA polymerase. A transcription complex is constructed from the RNA polymerase and several...lac and trp Types of RNA Polymerases Promoters control the binding of RNA polymerase to DNA to initiate ...are three types of RNA polymerases that all transcribe different genes. RNA polymerase I transcribes genes...