BioB

• Description: biotin synthase
  
  

Gene name	bioB
Synonyms
Essential	no
Product	biotin synthase)
Function	biosynthesis of biotin
Gene expression levels in SubtiExpress: bioB
Metabolic function and regulation of this protein in SubtiPathways: bioB
MW, pI	36 kDa, 5.554
Gene length, protein length	1005 bp, 335 aa
Immediate neighbours	bioI, bioD
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

biosynthesis of cofactors

This gene is a member of the following regulons

BirA regulon

The gene

Basic information

• Locus tag: BSU30200

Database entries

• BsubCyc: BSU30200

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: Dethiobiotin + sulfur + 2 S-adenosyl-L-methionine = biotin + 2 L-methionine + 2 5'-deoxyadenosine (according to Swiss-Prot)

• Protein family: Biotin synthase family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s): contains an iron-sulfur cluster

• Effectors of protein activity:

• Interactions:

• Localization:

Database entries

• BsubCyc: BSU30200

• Structure:

• UniProt: P53557

• KEGG entry: [3]

• E.C. number: 2.8.1.6

Additional information

• Operon: bioW-bioA-bioF-bioD-bioB-bioI-ytbQ PubMed

• Sigma factor:

• Regulation:
  • repressed in the presence of biotin (BirA) PubMed

• Regulatory mechanism:
  • BirA: transcription repression PubMed

• Additional information: subject to Clp-dependent proteolysis upon glucose starvation PubMed
  • number of protein molecules per cell (minimal medium with glucose and ammonium): 1660 PubMed
  • number of protein molecules per cell (complex medium with amino acids, without glucose): 4582 PubMed
  • number of protein molecules per cell (minimal medium with glucose and ammonium, early stationary phase after glucose exhaustion): 1227 PubMed

• • number of protein molecules per cell (minimal medium with glucose and ammonium, late stationary phase after glucose exhaustion): 1151 PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Reviews

Steven Lin, John E Cronan
Closing in on complete pathways of biotin biosynthesis.
Mol Biosyst: 2011, 7(6);1811-21
[PubMed:21437340] [WorldCat.org] [DOI] (I p)