QcrB

• Description: menaquinol:cytochrome c oxidoreductase (cytochrome b subunit), component of the cytochrome bc complex
  
  

Gene name	qcrB
Synonyms	bfcB, petB
Essential	no
Product	menaquinol:cytochrome c oxidoreductase (cytochrome b subunit)
Function	respiration
Gene expression levels in SubtiExpress: qcrB
Interactions involving this protein in SubtInteract: QcrB
MW, pI	25 kDa, 7.441
Gene length, protein length	672 bp, 224 aa
Immediate neighbours	qcrC, qcrA
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

respiration, membrane proteins

This gene is a member of the following regulons

AbrB regulon, ResD regulon

The gene

Basic information

• Locus tag: BSU22550

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: peptidase M20A family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:
  • part of a respiratory supercomplex PubMed
  • QcrA-QcrB-QcrC PubMed

• Localization:
  • cell membrane PubMed

Database entries

• Structure:

• UniProt: P46912

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: qcrA-qcrB-qcrC PubMed

• Expression browser: qcrB PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • repressed by casamino acids PubMed
  • induced by oxygen limitation (ResD) PubMed
  • repressed by glucose (CcpA) PubMed

• Regulatory mechanism:
  • ResD: transcription activation PubMed
  • CcpA: transcription repression PubMed
  • AbrB: transcription repression PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody: