The initiation factor TFE and the elongation factor Spt4/5 compete for the RNAP clamp during transcription initiation and elongation.
The initiation factor TFE and the elongation factor Spt4/5 compete for the RNAP clamp during transcription initiation and elongation.
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DOI:
10.1016/j.molcel.2011.05.030
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发表时间:
2011-07-22
期刊:
影响因子:
16
通讯作者:
Werner, Finn
中科院分区:
文献类型:
--
作者:
Grohmann, Dina;Nagy, Julia;Chakraborty, Anirban;Klose, Daniel;Fielden, Daniel;Ebright, Richard H.;Michaelis, Jens;Werner, Finn
TFIIE and the archaeal homolog TFE enhance DNA strand separation of eukaryotic RNAPII and the archaeal RNAP during transcription initiation by an unknown mechanism. We have developed a fluorescently labeled recombinant M. jannaschii RNAP system to probe the archaeal transcription initiation complex, consisting of promoter DNA, TBP, TFB, TFE, and RNAP. We have localized the position of the TFE winged helix (WH) and Zinc ribbon (ZR) domains on the RNAP using single-molecule FRET. The interaction sites of the TFE WH domain and the transcription elongation factor Spt4/5 overlap, and both factors compete for RNAP binding. Binding of Spt4/5 to RNAP represses promoter-directed transcription in the absence of TFE, which alleviates this effect by displacing Spt4/5 from RNAP. During elongation, Spt4/5 can displace TFE from the RNAP elongation complex and stimulate processivity. Our results identify the RNAP “clamp” region as a regulatory hot spot for both transcription initiation and transcription elongation. ► The RNAP clamp coiled coil and RNAP stalk are required for TFE binding and activity ► The elongation factor Spt4/5 can inhibit PIC formation and transcription initiation ► TFE efficiently prevents inhibition of transcription initiation by Spt4/5 ► Spt4/5 displaces TFE from the TEC
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影响因子:
4.1
作者:
Grohmann, Dina;Hirtreiter, Angela;Werner, Finn
通讯作者:
Werner, Finn
影响因子:
14.9
作者:
Hirtreiter A;Damsma GE;Cheung AC;Klose D;Grohmann D;Vojnic E;Martin AC;Cramer P;Werner F
通讯作者:
Werner F
影响因子:
7.7
作者:
Bell, SD;Brinkman, AB;Jackson, SP
通讯作者:
Jackson, SP
影响因子:
56.9
作者:
Kim, TK;Ebright, RH;Reinberg, D
通讯作者:
Reinberg, D
DOI:
10.1073/pnas.1013828108
发表时间:
2011-01-11
影响因子:
11.1
作者:
Klein, Brianna J.;Bose, Daniel;Murakami, Katsuhiko S.
通讯作者:
Murakami, Katsuhiko S.