dlvr.it
A mechanism of synergistic Mediator recruitment in RNA polymerase II transcription activation revealed by single-molecule fluorescence
Single-molecule fluorescence microscopy studies by Zhou et al. show that transcription activator proteins bind at UAS/enhancer DNA and then sequentially or simultaneously recruit Mediator coactivator and RNA polymerase II to form an initiation complex precursor. Multiple DNA-bound activators synergistically enhance recruitment by binding to the same Mediator complex.