IolE

• Description: 2-keto-myo-inositol dehydratase, dehydration of 2-keto-myo-inositol (2nd reaction)
  
  

Gene name	iolE
Synonyms	yxdE
Essential	no
Product	2-keto-myo-inositol dehydratase, dehydration of 2-keto-myo-inositol (2nd reaction)
Function	myo-inositol catabolism
Metabolic function and regulation of this protein in SubtiPathways: Sugar catabolism
MW, pI	33 kDa, 5.209
Gene length, protein length	891 bp, 297 aa
Immediate neighbours	iolF, iolD
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

Categories containing this gene/protein

utilization of specific carbon sources

This gene is a member of the following regulons

CcpA regulon, IolR regulon

The gene

Basic information

• Locus tag: BSU39720

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: 2,4,6/3,5-pentahydroxycyclohexanone = 3,5/4-trihydroxycyclohexa-1,2-dione + H₂O (according to Swiss-Prot)

• Protein family: iolE/mocC 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: 3CNY (from Lactobacillus plantarum wcfs1 mutant, 63% identity, 78% similarity)

• UniProt: P42416

• KEGG entry: [3]

• E.C. number: 4.2.1.44

Expression and regulation

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

• Expression browser: iolE 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