Crystal structures of the E. coli transcription initiation complexes with a complete bubble.
Crystal structures of the E. coli transcription initiation complexes with a complete bubble.
复制标题
大肠杆菌转录起始复合物的晶体结构具有完整的气泡。
DOI:
10.1016/j.molcel.2015.03.010
复制
发表时间:
2015-05-07
期刊:
影响因子:
16
通讯作者:
Steitz TA
中科院分区:
文献类型:
--
作者:
Zuo Y;Steitz TA
During transcription initiation, RNA polymerase binds to promoter DNA to form an initiation complex containing a DNA bubble and enters into abortive cycles of RNA synthesis before escaping the promoter to transit into the elongation phase for processive RNA synthesis. Here we present the crystal structures of E. coli transcription initiation complexes containing a complete transcription bubble and de novo synthesized RNA oligonucleotides at about 6 Å resolution. The structures show how RNA polymerase recognizes DNA promoters that contain spacers of different lengths and reveal a bridging interaction between the 5’-triphosphate of the nascent RNA and the σ factor that may function to stabilize the short RNA-DNA hybrids during the early stage of transcription initiation. The conformation of the RNA oligonucleotides and the paths of the DNA strands in the complete initiation complexes provide insights into the mechanism that controls both the abortive and productive RNA synthesis.
登录
查看更多内容
影响因子:
64.5
作者:
Feklistov A;Darst SA
通讯作者:
Darst SA
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
14.9
作者:
Pupov D;Kuzin I;Bass I;Kulbachinskiy A
通讯作者:
Kulbachinskiy A
DOI:
10.1126/science.1169237
发表时间:
2009-05-15
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Goldman SR;Ebright RH;Nickels BE
通讯作者:
Nickels BE
影响因子:
16.8
作者:
Campagne, Sebastien;Marsh, May E.;Allain, Frederic H-T
通讯作者:
Allain, Frederic H-T