RNA polymerase

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The enzyme responsible for transcription

Components of the RNA polymerase

Core subunits

Sigma factors

  • In addition to the housekeeping sigma factor, SigA, there are several other sigma factors with different promoter recognition specifiity that are active under specific conditions (such as stress or sporulation)

Small accessory subunits

  • RpoE: delta subunit
  • YloH: omega subunit

Other temporary components

  • NusA: essential elongation factor

References

Reviews

Vladimir Svetlov, Evgeny Nudler
Macromolecular micromovements: how RNA polymerase translocates.
Curr Opin Struct Biol: 2009, 19(6);701-7
[PubMed:19889534] [WorldCat.org] [DOI] (I p)

Evgeny Nudler
RNA polymerase active center: the molecular engine of transcription.
Annu Rev Biochem: 2009, 78;335-61
[PubMed:19489723] [WorldCat.org] [DOI] (I p)

P J Lewis, G P Doherty, J Clarke
Transcription factor dynamics.
Microbiology (Reading): 2008, 154(Pt 7);1837-1844
[PubMed:18599813] [WorldCat.org] [DOI] (P p)

Kristina M Herbert, William J Greenleaf, Steven M Block
Single-molecule studies of RNA polymerase: motoring along.
Annu Rev Biochem: 2008, 77;149-76
[PubMed:18410247] [WorldCat.org] [DOI] (P p)

Sergei Borukhov, Evgeny Nudler
RNA polymerase: the vehicle of transcription.
Trends Microbiol: 2008, 16(3);126-34
[PubMed:18280161] [WorldCat.org] [DOI] (P p)

W G Haldenwang
The sigma factors of Bacillus subtilis.
Microbiol Rev: 1995, 59(1);1-30
[PubMed:7708009] [WorldCat.org] [DOI] (P p)


The structure of RNA polymerase

Important original publications: PubMed