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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Exchange of RNA polymerase II initiation and elongation factors during gene expression in vivo.

We have systematically explored the in vivo occupancy of promoters and open reading frames by components of the RNA polymerase II transcription initiation and elongation apparatuses in yeast. RNA polymerase II, Mediator, and the general transcription factors (GTFs) were recruited to all promoters tested upon gene activation. RNA polymerase II, TFIIS, Spt5, and, unexpectedly, the Paf1/Cdc73 complex, were found associated with open reading frames. The presence of the Paf1/Cdc73 complex on ORFs in vivo suggests a novel function for this complex in elongation. Elongator was not detected under any conditions tested, and further analysis revealed that the majority of elongator is cytoplasmic. These results suggest a revised model for transcription initiation and elongation apparatuses in living cells.[1]

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