The phosphorylation of tyrosine in the heptad repeat of the C-terminal domain of the largest subunit of RNA polymerase II promotes Ser2 phosphorylation by P-TEFb for pausing release.
Tingting Zhao, Irina O Vvedenskaya ... Craig D Kaplan
Ssl2 processivity determines the window for transcription start site selection during promoter scanning by RNA polymerase II in Saccharomyces cerevisiae.
The requirements for preinitiation complex formation/stability and transcription by RNA polymerase II in yeast cells are different from those in vitro, thereby altering the current view of basal transcription.
Histone variant H2A.Z is deposited near transcription start sites by the chromatin remodeler SWR1 and seems to be removed by RNA polymerase II at an early stage of transcription elongation.