In nearly all cases these sigmas belong to a single family of proteins which appear to be related structurally and functionally to the major Escherichia coli sigma factor, σ; 70 . A clear exception is the Sigma
(Boor, 2006). Both RpoS and SigB belong to the σ70family sigma factors, which are mainly related to bacterial stress response. The role of sigma factors is to bind toRNA polymerase(RNAP) core enzymes, which is then directed to the promoter of DNA sequence for transcription initiation (...
RNA polymerase sigma 70 (also known as RNA pol sigma70 and rpoD) is a part of a family of sigma factor subunits that are required for specificpromoter recognition and initiation. RNA pol sigma 70 is the major housekeeping sigma factorresponsible for RNA polymerase recognition out of the ...
(1998) Negative Regulation by RpoS: A Case of Sigma Factor Competition. Mol. Microbiol. 29: pp. 1039-1051 Bedwell, D.M., Nomura, M. (1986) Feedback Regulation of RNA Polymerase Subunit Synthesis after the Condi-tional Overproduction of RNA Polymerase in Escheri-chia coli. Mol. Gen. Ge...
Cyclic re-use of the RNA polymerase sigma factor. Nature. 1969; 222 :537–540. [ PubMed ]Travers AA, Burgessrr : Cyclic re-use of the RNA polymerase sigma factor. Nature 1969, 222 (193) : 537-540. PubMed AbstractTravers AA and Burgess RR ( 1969 ) Cyclic re-use of the RNA ...
1.1Sigma(70)家族的分类 Sigma因子是RNA聚合酶(RNApolymerase,RNAP)的一个亚基,与RNAP核酶组成RNAP全酶,RNAP全酶控制着原核生物的基因转录。研究发现微生物体内的sigma因子是个大家族,不同的家族成员负责不同生理阶段所需基因的转录[5]。通过序列分析鉴定,sigma因子分 ...
Ling J, Sharma M, Bhagwat AA (2008) The role of RNA polymerase sigma-factor (rpos) in induction of glutamate-dependent acid- resistance of Escherichia albertii under anaerobic conditions. FEMS Microbiol Lett 283:75-82Ling, J., M. Sharma, and A. A. Bhagwat. 2008. Role of RNA polymerase...
iaessossawoyesf used the upstream regions of four housekeeping genes of OY-M [the protein chain initiation factor IF-3 (infC), 50S ribosomal subunit protein L13 (rplM), 30S ribosomal subunit protein S4 (rpsD), and RNA polymerase sigma70 factor (rpoD) genes] for in vitro transcription as...
Helmann The sigma70 family of sigma factors Genome Biol., 4 (2003), p. 203 View in ScopusGoogle Scholar 6 K.S. Murakami, S. Masuda, E.A. Campbell, O. Muzzin, S.A. Darst Structural basis of transcription initiation: an RNA polymerase holoenzyme-DNA complex Science, 296 (2002), pp....
1998. Sigma R, an RNA polymerase sigma factor that modulates expression of the thioredoxin system in response to oxidative stress in Streptomyces coelicolor A3(2). EMBO J. 17:5776-5782.Paget, M. S. B., Kang, J.-G., Roe, J.-H. & Buttner, M. J. (1998). R, an RNA ...