作者: Odil Porrua , Domenico Libri
DOI: 10.1007/978-1-4939-2214-7_19
关键词:
摘要: In vitro transcription systems have been widely used to study all the steps of from initiation termination and many transcription-coupled processes. Here we describe an in transcription-termination assay that for analysis mechanism by yeast helicase Sen1. this system, use highly purified proteins assemble ternary elongation complexes (RNA polymerase, DNA template, nascent RNA) on biotinylated is subsequently immobilized streptavidin beads. After allowing addition nucleotides, events can be detected quantified comparing amounts polymerases transcripts released templates reactions performed absence or presence By modifying different parameters assay, technique allows several aspects reaction.