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Innovation for ascertaining genomic islands in PAO1 and PA14 of Pseudomonas aeruginosa

  • Articles/Bioinformatics
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Chinese Science Bulletin

Abstract

Based on three distinct traits of genomic islands, a novel approach was developed to search for and determine genomic islands in special strains. Two genomic islands in Pseudomonas aeruginosa PAO1 and 7 genomic islands in Pseudomonas aeruginosa PA14 were defined with this method. Among the 9 genomic islands, 4 islands had been characterized before, while the other 5 islands were initially determined. The insert sites of 6 genomic islands are tRNA sequences, direct repeats of PA14GI-3 are relative to tRNALeu, and direct repeats of PA14GI-2 are at the 3′ end of bifunctional GMP synthase/glutamine amidotransferase. Only direct repeats of PA14GI-4 are not clear. Among the 5 newly-found genomic islands, it was supposed that PA14GI-2 is a genomic island related to Hg2+ uptake, PA14GI-3 is a secretory activity genomic island, PA14GI-6 is a pathogenicity island, and functions of PA14GI-1 and PA14GI-5 are not clear. Finally, the tyrosine type integrases in PAO1GI-1, PA14GI-5 and PA14GI-7 were analyzed, and their binding and restriction sites were predicted.

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Correspondence to XueHong Zhang.

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Supported by the National Natural Science Foundation of China (Grant Nos. 30821005 and 30870075), National Key Basic Research and Development Program of China (Grant No. 2009CB118906) and Shanghai Leading Academic Discipline Project (Grant No. B203)

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Song, L., Zhang, X. Innovation for ascertaining genomic islands in PAO1 and PA14 of Pseudomonas aeruginosa . Chin. Sci. Bull. 54, 3991–3999 (2009). https://doi.org/10.1007/s11434-009-0598-0

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  • DOI: https://doi.org/10.1007/s11434-009-0598-0

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