AraA

• Description: L-arabinose isomerase
  
  

Gene name	araA
Synonyms
Essential	no
Product	L-arabinose isomerase
Function	arabinose utilization
Metabolic function and regulation of this protein in SubtiPathways: Sugar catabolism
MW, pI	56 kDa, 5.474
Gene length, protein length	1494 bp, 498 aa
Immediate neighbours	araB, abnA
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: BSU28800

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: L-arabinose = L-ribulose (according to Swiss-Prot)

• Protein family: arabinose isomerase 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:

• Swiss prot entry: P94523

• KEGG entry: [3]

• E.C. number: 5.3.1.4

Expression and regulation

• Operon: araA-araB-araD-araL-araM-araN-araP-araQ-abfA

• Sigma factor: SigA

• Regulation: repressed by glucose (CcpA)
  • repressed in the absence of arabinose (AraR) PubMed

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

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

1. Inácio JM, Costa C, de Sá-Nogueira I. (2003) Distinct molecular mechanisms involved in carbon catabolite repression of the arabinose regulon in Bacillus subtilis. Microbiology. Sep;149(Pt 9): 2345-55. PubMed
2. Sa-Nogueira I.M.G., Nogueira T.V., Soares S., de Lencastre H. (1997) The Bacillus subtilis L-arabinose (ara) operon: nucleotide sequence, genetic organization and expression. Microbiology. Mar;143(Pt 3): 957-69. PubMed