GreA

• Description: transcription elongation factor, resolves stalled RNA polymerase at promoter or promoter-proximal regions,
  
  

Gene name	greA
Synonyms
Essential	no
Product	transcription elongation factor
Function	transcription elongation
Gene expression levels in SubtiExpress: greA
MW, pI	17 kDa, 4.475
Gene length, protein length	471 bp, 157 aa
Immediate neighbours	pbpI, udk
Sequences	Protein DNA DNA_with_flanks
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

transcription

The gene

Basic information

• Locus tag: BSU27320

Phenotypes of a mutant

• RNA polymerase accumulates in promoter-proximal regions of many genes PubMed

Database entries

• BsubCyc: BSU27320

• DBTBS entry: no entry

• SubtiList entry: [1]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: greA/greB family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:
  • GreA-RNA polymerase PubMed

• Localization: uniformly distributed throughout the nucleoid PubMed

Database entries

• BsubCyc: BSU27320

• Structure:

• UniProt: P80240

• KEGG entry: [2]

• E.C. number:

Expression and regulation

• Operon:

• Expression browser: greA PubMed

• Sigma factor:

• Regulation:

• Regulatory mechanism:

• Additional information:
  • number of protein molecules per cell (minimal medium with glucose and ammonium): 4395 PubMed
  • number of protein molecules per cell (complex medium with amino acids, without glucose): 11157 PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Reviews

Padraig Deighan, Ann Hochschild
Conformational toggle triggers a modulator of RNA polymerase activity.
Trends Biochem Sci: 2006, 31(8);424-6
[PubMed:16815708] [WorldCat.org] [DOI] (P p)

Sergei Borukhov, Jookyung Lee, Oleg Laptenko
Bacterial transcription elongation factors: new insights into molecular mechanism of action.
Mol Microbiol: 2005, 55(5);1315-24
[PubMed:15720542] [WorldCat.org] [DOI] (P p)

Bryce E Nickels, Ann Hochschild
Regulation of RNA polymerase through the secondary channel.
Cell: 2004, 118(3);281-4
[PubMed:15294154] [WorldCat.org] [DOI] (P p)