si_0745 RNA_polymerase_archaeal_initiation_factors TATA-box binding protein si_0745 RNA_polymerase_archaeal_initiation_factors Transcription initiation factor B si_0745 RNA_polymerase_archaeal_initiation_factors Archaeal transcription factor E si_0745 RNA_polymerase_archaeal_initiation_factors Transcription initiation factor B-related protein si_0745 RNA_polymerase_archaeal_initiation_factors Zinc finger, TFIIB-type domain protein