AlsR

• Description: transcriptional activator of the alsS-alsD operon
  
  

Gene name	alsR
Synonyms
Essential	no
Product	transcriptional activator(LysR family)
Function	regulation of acetoin synthesis (alsS-alsD)
Gene expression levels in SubtiExpress: alsR
Metabolic function and regulation of this protein in SubtiPathways: Central C-metabolism
MW, pI	34 kDa, 7.288
Gene length, protein length	906 bp, 302 aa
Immediate neighbours	alsS, ywrK
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

carbon core metabolism, transcription factors and their control

The AlsR regulon:

• alsS-alsD

The gene

Basic information

• Locus tag: BSU36020

Phenotypes of a mutant

no acetoin production

Database entries

• DBTBS entry: no entry

• SubtiList entry: [1]

Additional information

• A mutation was found in this gene after evolution under relaxed selection for sporulation PubMed
• Inactivation of alsR, sigD and sigW increases competitive fitness of Bacillus subtilis under non-sporulating conditions PubMed

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: binds the promoter region of the alsS-alsD operon in the presence of acetate, activates transcription

• Protein family: LysR family of transcription factors

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:
  • K(D) value for the binding site in the alsS promoter region: 33.5 nM PubMed

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization:

Database entries

• Structure:

• UniProt: Q04778

• KEGG entry: [2]

• E.C. number:

Expression and regulation

• Operon:

• Expression browser: alsR PubMed

• Sigma factor:

• Regulation:

• Regulatory mechanism:

• Additional information:

Biological materials

• Mutant: AMBs3 (spc), available in the Stülke lab
  • 1A978 ( alsR::cat), PubMed, available at BGSC

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

Labs working on this gene/protein

Elisabeth Härtig, Braunschweig, Germany Homepage

References

Reviews

Elisabeth Härtig, Dieter Jahn
Regulation of the anaerobic metabolism in Bacillus subtilis.
Adv Microb Physiol: 2012, 61;195-216
[PubMed:23046954] [WorldCat.org] [DOI] (I p)