OhrA

• Description: peroxiredoxin , protects the cell against organic peroxides
  
  

Gene name	ohrA
Synonyms	yklA
Essential	no
Product	peroxiredoxin
Function	organic peroxide resistance
Gene expression levels in SubtiExpress: ohrA
MW, pI	14 kDa, 5.061
Gene length, protein length	423 bp, 141 aa
Immediate neighbours	proA, ohrR
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

resistance against oxidative and electrophile stress

This gene is a member of the following regulons

OhrR regulon

The gene

Basic information

• Locus tag: BSU13140

Database entries

• BsubCyc: BSU13140

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: osmC/ohr family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization:

Database entries

• BsubCyc: BSU13140

• Structure:

• UniProt: O34762

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: ohrA PubMed

• Expression browser: ohrA PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • induced by organic peroxides (OhrR) PubMed

• Regulatory mechanism:
  • OhrR: transcription repression PubMed

• Additional information:
  • number of protein molecules per cell (minimal medium with glucose and ammonium): 205 PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Minsun Hong, Mayuree Fuangthong, John D Helmann, Richard G Brennan
Structure of an OhrR-ohrA operator complex reveals the DNA binding mechanism of the MarR family.
Mol Cell: 2005, 20(1);131-41
[PubMed:16209951] [WorldCat.org] [DOI] (P p)

John D Helmann, Ming Fang Winston Wu, Ahmed Gaballa, Phil A Kobel, Maud M Morshedi, Paul Fawcett, Chris Paddon
The global transcriptional response of Bacillus subtilis to peroxide stress is coordinated by three transcription factors.
J Bacteriol: 2003, 185(1);243-53
[PubMed:12486061] [WorldCat.org] [DOI] (P p)

M Fuangthong, S Atichartpongkul, S Mongkolsuk, J D Helmann
OhrR is a repressor of ohrA, a key organic hydroperoxide resistance determinant in Bacillus subtilis.
J Bacteriol: 2001, 183(14);4134-41
[PubMed:11418552] [WorldCat.org] [DOI] (P p)

U Völker, K K Andersen, H Antelmann, K M Devine, M Hecker
One of two osmC homologs in Bacillus subtilis is part of the sigmaB-dependent general stress regulon.
J Bacteriol: 1998, 180(16);4212-8
[PubMed:9696771] [WorldCat.org] [DOI] (P p)