IolB

• Description: formation of 2-deoxy-5-keto-gluconic acid (4th reaction)
  
  

Gene name	iolB
Synonyms	yxdB
Essential	no
Product	formation of 2-deoxy-5-keto-gluconic acid (4th reaction)
Function	myo-inositol catabolism
Metabolic function and regulation of this protein in SubtiPathways: Sugar catabolism
MW, pI	30 kDa, 4.77
Gene length, protein length	813 bp, 271 aa
Immediate neighbours	iolC, iolA
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

The gene

Basic information

• Locus tag: BSU39750

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

Categories containing this gene/protein

utilization of specific carbon sources

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: 5-deoxy-glucuronic acid = 5-dehydro-2-deoxy-D-gluconic acid (according to Swiss-Prot)

• Protein family: isomerase iolB 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

• Structure: 2QJV (from Salmonella typhimurium, 49% identity, 65% similarity)

• UniProt: P42413

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: iolA-iolB-iolC-iolD-iolE-iolF-iolG-iolH-iolI-iolJ PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • repressed by glucose (CcpA) PubMed
  • induced by inositol (IolR) PubMed

• Regulatory mechanism:
  • IolR: transcription repression PubMed
  • CcpA: transcription repression PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

Labs working on this gene/protein

• Yasutaro Fujita, University of Fukuyama, Japan
• Ken-ichi Yoshida, Kobe University, Japan

References

Ken-ichi Yoshida, Masanori Yamaguchi, Tetsuro Morinaga, Masaki Kinehara, Maya Ikeuchi, Hitoshi Ashida, Yasutaro Fujita
myo-Inositol catabolism in Bacillus subtilis.
J Biol Chem: 2008, 283(16);10415-24
[PubMed:18310071] [WorldCat.org] [DOI] (P p)

Y Miwa, Y Fujita
Involvement of two distinct catabolite-responsive elements in catabolite repression of the Bacillus subtilis myo-inositol (iol) operon.
J Bacteriol: 2001, 183(20);5877-84
[PubMed:11566986] [WorldCat.org] [DOI] (P p)

K I Yoshida, T Shibayama, D Aoyama, Y Fujita
Interaction of a repressor and its binding sites for regulation of the Bacillus subtilis iol divergon.
J Mol Biol: 1999, 285(3);917-29
[PubMed:9887260] [WorldCat.org] [DOI] (P p)

K I Yoshida, D Aoyama, I Ishio, T Shibayama, Y Fujita
Organization and transcription of the myo-inositol operon, iol, of Bacillus subtilis.
J Bacteriol: 1997, 179(14);4591-8
[PubMed:9226270] [WorldCat.org] [DOI] (P p)