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The genome of Polaromonas sp. strain JS666: insights into the evolution of a hydrocarbon- and xenobiotic-degrading bacterium, and features of relevance to biotechnology
Journal article   Open access   Peer reviewed

The genome of Polaromonas sp. strain JS666: insights into the evolution of a hydrocarbon- and xenobiotic-degrading bacterium, and features of relevance to biotechnology

Timothy E Mattes, Anne K Alexander, Paul M Richardson, A Christine Munk, Cliff S Han, Paul Stothard and Nicholas V Coleman
Applied and environmental microbiology, Vol.74(20), pp.6405-6416
10/2008
DOI: 10.1128/AEM.00197-08
PMCID: PMC2570305
PMID: 18723656
url
https://doi.org/10.1128/AEM.00197-08View
Published (Version of record) Open Access

Abstract

Polaromonas sp. strain JS666 can grow on cis-1,2-dichloroethene (cDCE) as a sole carbon and energy source and may be useful for bioremediation of chlorinated solvent-contaminated sites. Analysis of the genome sequence of JS666 (5.9 Mb) shows a bacterium well adapted to pollution that carries many genes likely to be involved in hydrocarbon and xenobiotic catabolism and metal resistance. Clusters of genes coding for haloalkane, haloalkanoate, n-alkane, alicyclic acid, cyclic alcohol, and aromatic catabolism were analyzed in detail, and growth on acetate, catechol, chloroacetate, cyclohexane carboxylate, cyclohexanol, ferulate, heptane, 3-hydroxybenzoate, hydroxyquinol, gentisate, octane, protocatechuate, and salicylate was confirmed experimentally. Strain JS666 also harbors diverse putative mobile genetic elements, including retrons, inteins, a miniature inverted-repeat transposable element, insertion sequence transposases from 14 families, eight genomic islands, a Mu family bacteriophage, and two large (338- and 360-kb) plasmids. Both plasmids are likely to be self-transferable and carry genes for alkane, alcohol, aromatic, and haloacid metabolism. Overall, the JS666 genome sequence provides insights into the evolution of pollutant-degrading bacteria and provides a toolbox of catabolic genes with utility for biotechnology.
Genes, Bacterial Genome, Bacterial Multigene Family Comamonadaceae - genetics Interspersed Repetitive Sequences Bacterial Proteins - genetics Hydrocarbons - metabolism Molecular Sequence Data DNA, Bacterial - chemistry Sequence Analysis, DNA DNA, Bacterial - genetics Enzymes - genetics Xenobiotics - metabolism Evolution, Molecular

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