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Identified virulence factors of Aeromonas: Motility


Lateral flagella  

Related genes: flgC; flgE; flgI; flgJ; fliF; fliG; fliP; lafB; lafC; lafE; lafF; lafK; lafS; lafT; lafU; lafX; lfgA; lfgB; lfgF; lfgG; lfgH; lfgK; lfgL; lfgM; lfgN; lfhA; lfhB; lfiE; lfiH; lfiI; lfiJ; lfiM; lfiN; lfiQ; lfiR; maf-5;
Keywords: Motility; Colonization;
Figures:
Genetic organization of lateral flagella genes (From: Tomas JM, 2012. The main Aeromonas pathogenic factors. ISRN Microbiol 2012:256261.).


Functions:
Inducible lateral peritrichous flagellar system is responsible for movement across solid surfaces or through viscous environments known as swarming motility.
Glycosylation of the lateral flagellin is essential for swarming motility over surfaces.
References:
Gavin R, et al., 2002. Lateral flagella of Aeromonas species are essential for epithelial cell adherence and biofilm formation. Mol Microbiol 43(2):383-97.
Gavin R, et al., 2003. Lateral flagella are required for increased cell adherence, invasion and biofilm formation by Aeromonas spp. FEMS Microbiol Lett 224(1):77-83.
Sen K, et al., 2007. Importance of flagella and enterotoxins for Aeromonas virulence in a mouse model. Can J Microbiol 53(2):261-9.


Polar flagella  

Related genes: AHML_07520; cheA; cheB; cheR; cheV; cheW; cheY; cheZ; flaA; flaB; flaG; flaH; flaJ; flgA; flgB; flgC; flgD; flgE; flgF; flgG; flgH; flgI; flgJ; flgK; flgL; flgM; flgN; flhA; flhB; flhF; flhG; fliA; fliE; fliF; fliG; fliH; fliI; fliJ; fliK; fliL; fliM; fliN; fliO; fliP; fliQ; fliR; flmD; flmH; flrA; flrB; flrC; motX; motY; nueA; nueB; pomA; pomA; pomB; pomB2;
Keywords: Motility; Colonization;
Characteristics:
Types of bacterial movement: swimming, swarming, gliding, twitching and sliding. Only swimming and swarming are correlated with the presence of flagella. Swimming is an individual endeavour, while swarming is the movement of a group of bacteria.
Constitutively expressed for motility in liquid environments.
Figures:
Genetic organization of polar flagellar genes (From: Tomas JM, 2012. The main Aeromonas pathogenic factors. ISRN Microbiol 2012:256261.).


Functions:
Necessary for motility, adhesion and invasion.
Glycosylation of the flagellin may play a role in provoking a proinflammatory response.
References:
Rabaan AA, et al., 2001. Motility and the polar flagellum are required for Aeromonas caviae adherence to HEp-2 cells. Infect Immun 69(7):4257-67.
Sen K, et al., 2007. Importance of flagella and enterotoxins for Aeromonas virulence in a mouse model. Can J Microbiol 53(2):261-9.
Merino S, et al., 2014. Role of Aeromonas hydrophila flagella glycosylation in adhesion to Hep-2 cells, biofilm formation and immune stimulation. Int J Mol Sci 15(12):21935-46.








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