Category:Complex:EIIFru

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Description (originally from EcoCyc[1][2]) EIIFru

Comments (originally from EcoCyc[1][2]) FruAB, the fructose PTS permease, belongs to the functional superfamily of the phosphoenolpyruvate (PEP)-dependent, sugar transporting phosphotransferase system (PTS). The PTS transports and simultaneously phosphorylates its sugar substrates in a process called group translocation. FruAB takes up exogenous fructose, releasing the 1-phosphate ester into the cell cytoplasm in preparation for metabolism, primarily via glycolysis [3][4][5][6][7][8]. The fru operon is also subject to positive control by the cyclic AMP-cyclic AMP receptor protein (CRP) complex. The fru operon contains the fruB gene, the fruK gene (encoding fructose-1-P kinase) and the fruA gene in that order. The fruR gene does not map near the fru operon. FruK is a homologue of phosphofructokinase.


References

  1. ↑ 1.0 1.1 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  2. ↑ 2.0 2.1 EcoCyc (release 11.1; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  3. ↑ Postma, PW et al. (1993) Phosphoenolpyruvate:carbohydrate phosphotransferase systems of bacteria. Microbiol. Rev. 57 543-94 PubMed
  4. ↑ Prior, TI & Kornberg, HL (1988) Nucleotide sequence of fruA, the gene specifying enzyme IIfru of the phosphoenolpyruvate-dependent sugar phosphotransferase system in Escherichia coli K12. J Gen Microbiol 134 2757-68 PubMed
  5. ↑ Geerse, RH et al. (1989) The PEP: fructose phosphotransferase system in Salmonella typhimurium: FPr combines enzyme IIIFru and pseudo-HPr activities. Mol. Gen. Genet. 216 517-25 PubMed
  6. ↑ Charbit, A et al. (1996) Function of the duplicated IIB domain and oligomeric structure of the fructose permease of Escherichia coli. J. Biol. Chem. 271 9997-10003 PubMed
  7. ↑ Feldheim, DA et al. (1990) Physiological consequences of the complete loss of phosphoryl-transfer proteins HPr and FPr of the phosphoenolpyruvate:sugar phosphotransferase system and analysis of fructose (fru) operon expression in Salmonella typhimurium. J. Bacteriol. 172 5459-69 PubMed
  8. ↑ Ramseier, TM et al. (1993) In vitro binding of the pleiotropic transcriptional regulatory protein, FruR, to the fru, pps, ace, pts and icd operons of Escherichia coli and Salmonella typhimurium. J. Mol. Biol. 234 28-44 PubMed

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