Alterations in the primary structure of an 85-MDa plasmid affecting flagellation and motility in the bacterium Azospirillum brasilense Sp245

Alterations in the primary structure of an 85-MDa plasmid affecting flagellation and motility in... Earlier, such Azospirillum brasilense Sp245 mutants as flagellation-defective SK051, SK248 with paralyzed flagella, and BK570 swimming and swarming faster than Sp245 were obtained. In SK051 and SK248, the suicide vector pJFF350 integrated into the 18.3-kb XhoI fragment of an 85-MDa plasmid (p85) while in BK570, it integrated into the 9.1-kb XhoI-fragment of p85. In the present work, analysis of the nucleotide sequence of fusion products of p85 and pJFF350 was performed. In p85, in addition to three IS elements (two of which mediated cointegrate formation) and phage integrase gene, 22 open reading frames with coding properties were identified. Possible participation of predicted translation products of several p85 genes in determination of bacterial motility is discussed. Since differences in the primary structure of p85::pJFF350 cointegrates from SK051 and SK248 cells are localized within pJFF350 DNA, different effects of DNA-folding changes on the expression of corresponding p85 genes are suggested. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Alterations in the primary structure of an 85-MDa plasmid affecting flagellation and motility in the bacterium Azospirillum brasilense Sp245

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2012 by Pleiades Publishing, Ltd.
Subject
Biomedicine; Human Genetics; Microbial Genetics and Genomics; Animal Genetics and Genomics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795412010115
Publisher site
See Article on Publisher Site

Abstract

Earlier, such Azospirillum brasilense Sp245 mutants as flagellation-defective SK051, SK248 with paralyzed flagella, and BK570 swimming and swarming faster than Sp245 were obtained. In SK051 and SK248, the suicide vector pJFF350 integrated into the 18.3-kb XhoI fragment of an 85-MDa plasmid (p85) while in BK570, it integrated into the 9.1-kb XhoI-fragment of p85. In the present work, analysis of the nucleotide sequence of fusion products of p85 and pJFF350 was performed. In p85, in addition to three IS elements (two of which mediated cointegrate formation) and phage integrase gene, 22 open reading frames with coding properties were identified. Possible participation of predicted translation products of several p85 genes in determination of bacterial motility is discussed. Since differences in the primary structure of p85::pJFF350 cointegrates from SK051 and SK248 cells are localized within pJFF350 DNA, different effects of DNA-folding changes on the expression of corresponding p85 genes are suggested.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Jan 5, 2012

References

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