00:01
So in problem number four, chapter number seven, you know, rna polymerase 2, right, exist in two forms.
00:20
One is the unfosfol related and the other is phosphorylated.
00:37
Right.
00:39
So 2a and 2o respectively.
00:46
Right? so the transition between the two forms facilitates different functions of, you know, transcription.
00:56
The phosphorylation of ctd is, you know, catalyzed by one of the six general, you know, transcriptions.
01:10
Which are the tfii -i -h you know tfii -i -h serves two purposes.
01:20
One is to unwind the dna, right, at the transcription start side, and the other is to phosphorylate.
01:40
Right.
01:41
So the polymerase 2a joins the pre -initiation complex...