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Int. J. Mol. Sci. 2017, 18(3), 519; doi:10.3390/ijms18030519

Comparative Genomics of the Aeromonadaceae Core Oligosaccharide Biosynthetic Regions

Department of Genética, Microbiología y Estadística, Universidad de Barcelona, Diagonal 643, 08071 Barcelona, Spain
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Author to whom correspondence should be addressed.
Academic Editor: William Chi-shing Cho
Received: 7 February 2017 / Revised: 23 February 2017 / Accepted: 26 February 2017 / Published: 28 February 2017
(This article belongs to the Special Issue Lipopolysaccharides (LPSs))
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Abstract

Lipopolysaccharides (LPSs) are an integral part of the Gram-negative outer membrane, playing important organizational and structural roles and taking part in the bacterial infection process. In Aeromonas hydrophila, piscicola, and salmonicida, three different genomic regions taking part in the LPS core oligosaccharide (Core-OS) assembly have been identified, although the characterization of these clusters in most aeromonad species is still lacking. Here, we analyse the conservation of these LPS biosynthesis gene clusters in the all the 170 currently public Aeromonas genomes, including 30 different species, and characterise the structure of a putative common inner Core-OS in the Aeromonadaceae family. We describe three new genomic organizations for the inner Core-OS genomic regions, which were more evolutionary conserved than the outer Core-OS regions, which presented remarkable variability. We report how the degree of conservation of the genes from the inner and outer Core-OS may be indicative of the taxonomic relationship between Aeromonas species. View Full-Text
Keywords: Aeromonas; genomics; inner core oligosaccharide; outer core oligosaccharide; lipopolysaccharide Aeromonas; genomics; inner core oligosaccharide; outer core oligosaccharide; lipopolysaccharide
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Forn-Cuní, G.; Merino, S.; Tomás, J.M. Comparative Genomics of the Aeromonadaceae Core Oligosaccharide Biosynthetic Regions. Int. J. Mol. Sci. 2017, 18, 519.

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