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. 1997 Jan;179(1):287–289. doi: 10.1128/jb.179.1.287-289.1997

Phosphorylating and dephosphorylating protein complexes in bacterial chemotaxis.

H Wang 1, P Matsumura 1
PMCID: PMC178693  PMID: 8982012

Abstract

During optimal motility conditions, a 1:1 stoichiometry of CheA(L) (654 amino acids) to CheA(S) (557 amino acids) was determined. It was also found that CheZ binding to CheA(S) was inhibited by CheA(L)-CheA(S)-CheW interaction. This suggests that CheA(S) has different functions in the phosphorylating complex (CheA(L)-CheA(S)-CheW) and in the dephosphorylating complex (CheA(S)-CheZ).

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Amsler C. D., Cho M., Matsumura P. Multiple factors underlying the maximum motility of Escherichia coli as cultures enter post-exponential growth. J Bacteriol. 1993 Oct;175(19):6238–6244. doi: 10.1128/jb.175.19.6238-6244.1993. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Bourret R. B., Borkovich K. A., Simon M. I. Signal transduction pathways involving protein phosphorylation in prokaryotes. Annu Rev Biochem. 1991;60:401–441. doi: 10.1146/annurev.bi.60.070191.002153. [DOI] [PubMed] [Google Scholar]
  3. Gegner J. A., Dahlquist F. W. Signal transduction in bacteria: CheW forms a reversible complex with the protein kinase CheA. Proc Natl Acad Sci U S A. 1991 Feb 1;88(3):750–754. doi: 10.1073/pnas.88.3.750. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Gegner J. A., Graham D. R., Roth A. F., Dahlquist F. W. Assembly of an MCP receptor, CheW, and kinase CheA complex in the bacterial chemotaxis signal transduction pathway. Cell. 1992 Sep 18;70(6):975–982. doi: 10.1016/0092-8674(92)90247-a. [DOI] [PubMed] [Google Scholar]
  5. Hess J. F., Bourret R. B., Simon M. I. Histidine phosphorylation and phosphoryl group transfer in bacterial chemotaxis. Nature. 1988 Nov 10;336(6195):139–143. doi: 10.1038/336139a0. [DOI] [PubMed] [Google Scholar]
  6. Hess J. F., Oosawa K., Kaplan N., Simon M. I. Phosphorylation of three proteins in the signaling pathway of bacterial chemotaxis. Cell. 1988 Apr 8;53(1):79–87. doi: 10.1016/0092-8674(88)90489-8. [DOI] [PubMed] [Google Scholar]
  7. McNally D. F., Matsumura P. Bacterial chemotaxis signaling complexes: formation of a CheA/CheW complex enhances autophosphorylation and affinity for CheY. Proc Natl Acad Sci U S A. 1991 Jul 15;88(14):6269–6273. doi: 10.1073/pnas.88.14.6269. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Sanatinia H., Kofoid E. C., Morrison T. B., Parkinson J. S. The smaller of two overlapping cheA gene products is not essential for chemotaxis in Escherichia coli. J Bacteriol. 1995 May;177(10):2713–2720. doi: 10.1128/jb.177.10.2713-2720.1995. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Schuster S. C., Swanson R. V., Alex L. A., Bourret R. B., Simon M. I. Assembly and function of a quaternary signal transduction complex monitored by surface plasmon resonance. Nature. 1993 Sep 23;365(6444):343–347. doi: 10.1038/365343a0. [DOI] [PubMed] [Google Scholar]
  10. Tawa P., Stewart R. C. Kinetics of CheA autophosphorylation and dephosphorylation reactions. Biochemistry. 1994 Jun 28;33(25):7917–7924. doi: 10.1021/bi00191a019. [DOI] [PubMed] [Google Scholar]
  11. Wang H., Matsumura P. Characterization of the CheAS/CheZ complex: a specific interaction resulting in enhanced dephosphorylating activity on CheY-phosphate. Mol Microbiol. 1996 Feb;19(4):695–703. doi: 10.1046/j.1365-2958.1996.393934.x. [DOI] [PubMed] [Google Scholar]

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