FbaA

• Description: fructose 1,6-bisphosphate aldolase, glycolytic/ gluconeogenic enzyme
  
  

Gene name	fbaA
Synonyms	fba, fba1, tsr
Essential	yes
Product	fructose-1,6-bisphosphate aldolase
Function	enzyme in glycolysis/ gluconeogenesis
MW, pI	30,2 kDa, 5.03
Gene length, protein length	855 bp, 285 amino acids
Immediate neighbours	spo0F, ywjH
Gene sequence (+200bp)	Protein sequence
Genetic context

The gene

Basic information

• Coordinates: 3807538 - 3808392

Phenotypes of a mutant

essential PubMed

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: D-fructose 1,6-bisphosphate = dihydroxyacetone phosphate + D-glyceraldehyde 3-phosphate

• Protein family: class II fructose-bisphosphate aldolase family.

• Paralogous protein(s): FbaB

Extended information on the protein

• Kinetic information:

• Domains:
  • 2 x Dihydroxyacetone phosphate binding domain (210–212), (231–234)

• Modification: Phosphorylated PubMed

• Cofactor(s): 2 x zinc ion

• Effectors of protein activity: inhibited by alpha-keto acids PubMed

• Interactions:

• Localization:

Database entries

• Structure:

• Swiss prot entry: [3]

• KEGG entry: [4]

• E.C. number: [5]

Additional information

Binds 2 zinc ions per subunit. One is catalytic and the other provides a structural contribution

Expression and regulation

• Operon:
  • fbaA PubMed
  • fbaA-ywjH PubMed

• Sigma factor:

• Regulation: constitutively expressed PubMed

• Regulatory mechanism:

• Additional information:

Biological materials

• Mutant:

• Expression vector: pGP395 (N-terminal His-tag, in pWH844), pGP88 (N-terminal Strep-tag, for SPINE, expression in B. subtilis, in pGP380)

• lacZ fusion: pGP601 (in pAC6)

• GFP fusion:

• two-hybrid system: B. pertussis adenylate cyclase-based bacterial two hybrid system (BACTH), available in Stülke lab

• Antibody:

References

1. Trach K, Chapman JW & Piggot P (1988) Complete sequence and transcriptional analysis of the spo0F region of the Bacillus subtilis chromosome J Bacteriol. 170: 4194-4208. PubMed
2. Ludwig H, Homuth G & Schmalisch M (2001) Transcription of glycolytic genes and operons in Bacillus subtilis: evidence for the presence of multiple levels of control of the gapA operon Mol Microbiol. 41: 409-422. PubMed