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Gene Review

flgE  -  flagellar hook protein

Escherichia coli str. K-12 substr. MG1655

Synonyms: ECK1061, JW1063, flaK
 
 

  

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Disease relevance of flgE

 

High impact information on flgE

  • Membranes of the flaK mutant were unable to process preflagellin in the in vitro assay [6].
  • Homologous recombination of an integration vector into the chromosomal copy of flaK resulted in a non-motile, non-flagellated phenotype [6].
  • The ORFs of flaH, flaI and flaK contain sequences coding for nucleotide binding sites [7].
  • The genes flaD, E, G, H, I and J share high homologies with genes from other Archaea. Interestingly, flaK shows similarities to bacterial genes involved in the regulation of flagellar synthesis [7].
  • OBJECTIVE: The factor V Leiden (FVL) mutation (Arg506Glu) results in the production of an FV protein that when activated is relatively resistant to inactivation by activated protein C and thereby leads to predisposition to thrombosis [8].
 

Chemical compound and disease context of flgE

 

Biological context of flgE

  • Starting with a primer specific to flgE, we identified and sequenced 14 open reading frames (ORFs) spanning 11 kb downstream of the flgE gene [10].
  • The T. phagedenis flgE gene was cloned into an Escherichia coli protein expression plasmid, and the purified recombinant protein was used to prepare a FlgE antiserum [2].
  • Upstream of flgE, separated by 39 nt, was a partial (291-nt) ORF with a deduced amino acid sequence that was homologous to that of ORF8, a polypeptide of unknown function located in an operon encoding polypeptides involved in motility of B. subtilis [2].
  • The flgE gene is 1,119 nucleotides long and is located on the 950-kb linear chromosome of B. burgdorferi [3].
  • It was found that transcription of genes responsible for the formation and/or function of flagella (hag, fla, mot, che) decreased significantly at 40 degrees C. However, in the ftsI730 mutant at the nonpermissive temperature, or in penicillin G treated wild-type cells, cell division was blocked but formation of flagella continued [11].
 

Anatomical context of flgE

  • No analogs to the bacterial chemotactic and motility (che, mot, fla) genes, genes for a two-component signal transduction system, genes associated with gliding, or genomic homologs for the eukaryotic cytoskeleton and motor proteins were found in the Mollicutes [12].
 

Analytical, diagnostic and therapeutic context of flgE

  • The flgE genes of four additional C. jejuni strains were amplified by PCR and also sequenced [1].
  • Reverse transcription-polymerase chain reaction (RT-PCR) analysis revealed that the genes flaE to flaK are transcribed into one polycistronic message [7].

 

Immunological context of flgE

  • The flgE proteins, as antigens, could induce antibodies in hosts upon infection. [13-15]
  • The flgE proteins, as immunostimulators, involve in lung injury in animal model. [16-17

References

  1. The central, surface-exposed region of the flagellar hook protein FlgE of Campylobacter jejuni shows hypervariability among strains. Lüneberg, E., Glenn-Calvo, E., Hartmann, M., Bär, W., Frosch, M. J. Bacteriol. (1998) [Pubmed]
  2. Genetic and biochemical analysis of the flagellar hook of Treponema phagedenis. Limberger, R.J., Slivienski, L.L., Samsonoff, W.A. J. Bacteriol. (1994) [Pubmed]
  3. The hook protein of Borrelia burgdorferi, encoded by the flgE gene, is serologically recognized in Lyme disease. Jwang, B., Dewing, P., Fikrig, E., Flavell, R.A. Clin. Diagn. Lab. Immunol. (1995) [Pubmed]
  4. Identification and characterization of human endometase (Matrix metalloproteinase-26) from endometrial tumor. Park, H.I., Ni, J., Gerkema, F.E., Liu, D., Belozerov, V.E., Sang, Q.X. J. Biol. Chem. (2000) [Pubmed]
  5. Isolation of specialized lambda transducing bacteriophages for flagellar genes (fla) of Escherichia coli K-12. Komeda, Y., Shimada, K., Iino, T. J. Virol. (1977) [Pubmed]
  6. Cleavage of preflagellins by an aspartic acid signal peptidase is essential for flagellation in the archaeon Methanococcus voltae. Bardy, S.L., Jarrell, K.F. Mol. Microbiol. (2003) [Pubmed]
  7. The fla gene cluster is involved in the biogenesis of flagella in Halobacterium salinarum. Patenge, N., Berendes, A., Engelhardt, H., Schuster, S.C., Oesterhelt, D. Mol. Microbiol. (2001) [Pubmed]
  8. Role of the factor V Leiden mutation in septic peritonitis assessed in factor V Leiden transgenic mice. Brüggemann, L.W., Schoenmakers, S.H., Groot, A.P., Reitsma, P.H., Spek, C.A. Crit. Care Med. (2006) [Pubmed]
  9. Single-chain antibody variable region-targeted interleukin-2 stimulates T cell killing of human colorectal carcinoma cells. Xiang, J., Liu, E., Moyana, T., Qi, Y. Immunol. Cell Biol. (1994) [Pubmed]
  10. Identification of a large motility operon in Borrelia burgdorferi by semi-random PCR chromosome walking. Ge, Y., Charon, N.W. Gene (1997) [Pubmed]
  11. A cell division regulatory mechanism controls the flagellar regulon in Escherichia coli. Nishimura, A., Hirota, Y. Mol. Gen. Genet. (1989) [Pubmed]
  12. Shaping and moving a spiroplasma. Trachtenberg, S. J. Mol. Microbiol. Biotechnol. (2004) [Pubmed]
 
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