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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