Category:Complex:EIIChb

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

Comments (originally from EcoCyc[1][2]) ChbA-ChbB-ChbC, the N,N'-diacetylchitobiose PTS permease (previously designated CelABC, the Cellobiose/Arbutin/Salicin 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. The ChbABC complex takes up exogenous N,N'-diacetylchitobiose, releasing the phosphate ester into the cell cytoplasm in preparation for hydrolysis and metabolism, primarily via glycolysis [3][4][5][6][5][7][8][9]. The chb operon is subject to positive control by the cyclic AMP-cyclic AMP receptor protein complex.


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. ↑ Ovsiankin, NA (1984) [Our experience with the treatment of post-traumatic ossification of the elbow joint]. Ortop Travmatol Protez 42-6 PubMed
  4. ↑ Keyhani, NO & Roseman, S (1997) Wild-type Escherichia coli grows on the chitin disaccharide, N,N'-diacetylchitobiose, by expressing the cel operon. Proc. Natl. Acad. Sci. U.S.A. 94 14367-71 PubMed
  5. ↑ 5.0 5.1 Parker, LL & Hall, BG (1990) Mechanisms of activation of the cryptic cel operon of Escherichia coli K12. Genetics 124 473-82 PubMed
  6. ↑ Reizer, J et al. () The cellobiose permease of Escherichia coli consists of three proteins and is homologous to the lactose permease of Staphylococcus aureus. Res. Microbiol. 141 1061-7 PubMed
  7. ↑ Parker, LL & Hall, BG (1990) Characterization and nucleotide sequence of the cryptic cel operon of Escherichia coli K12. Genetics 124 455-71 PubMed
  8. ↑ Tang, C et al. (2005) Solution structure of enzyme IIA(Chitobiose) from the N,N'-diacetylchitobiose branch of the Escherichia coli phosphotransferase system. J. Biol. Chem. 280 11770-80 PubMed
  9. ↑ van Montfort, RL et al. (1997) The structure of an energy-coupling protein from bacteria, IIBcellobiose, reveals similarity to eukaryotic protein tyrosine phosphatases. Structure 5 217-25 PubMed

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