Transposon insertion into a chromosomal copy of flhB gene is concurrent with defects in the formation of polar and lateral flagella in the bacterium Azospirillum brasilense Sp245

Transposon insertion into a chromosomal copy of flhB gene is concurrent with defects in the... Based on an example of Azospirillum brasilense Sp245, it was shown that, in bacteria with mixed flagellation, insertional mutagenesis of one of the copies of the flhB gene, which encodes a component of the flagellar protein export apparatus, may be concurrent with defects in the formation of both a constitutive polar flagellum and inducible lateral flagella. Despite the presence of a second copy of flhB in the plasmid-located gene cluster, which seems necessary for the formation of lateral flagella, the flhB1::Omegon-Km Sp245 mutant completely lost the ability to produce them. The described effect of the inactivation of flhB1 might be explained by the use of FlhBl for the assembly of both types of flagella. Since the open reading frame AZOBR_150176, which is transcribed in the same direction and codes for a hypothetical multisensor hybrid histidine kinase/response regulator, adjoins to the 3’-end of flhB1, the participation of the latter protein in the induction of the lateral flagellar synthesis in response to the increase in the density of the environment was not excluded. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Transposon insertion into a chromosomal copy of flhB gene is concurrent with defects in the formation of polar and lateral flagella in the bacterium Azospirillum brasilense Sp245

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Publisher
Springer US
Copyright
Copyright © 2013 by Pleiades Publishing, Ltd.
Subject
Biomedicine; Human Genetics; Animal Genetics and Genomics; Microbial Genetics and Genomics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795413080061
Publisher site
See Article on Publisher Site

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