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Artículo

The polyhydroxyalkanoate genes of a stress resistant Antarctic Pseudomonas are situated within a genomic island

Ayub, Nicolás DanielIcon ; Pettinari, María JuliaIcon ; Mendez, Beatriz SilviaIcon ; López, Nancy IreneIcon
Fecha de publicación: 11/2007
Editorial: Academic Press Inc Elsevier Science
Revista: Plasmid
ISSN: 0147-619X
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

Pseudomonas sp. 14-3 is an Antarctic bacterium that shows high stress resistance in association with high polyhydroxybutyrate (PHB) production. In this paper genes involved in PHB biosynthesis (phaRBAC) were found within a genomic island named pha-GI. Numerous mobile elements or proteins associated with them, such as an integrase, insertion sequences, a bacterial group II intron, a complete Type I protein secretion system and IncP plasmid-related proteins were detected among the 28 ORFs identified in this large genetic element (32.3 kb). The G + C distribution was not homogeneous, likely reflecting a mosaic structure that contains regions from diverse origins. pha-GI has strong similarities with genomic islands found in diverse Proteobacteria, including Burkholderiales species and Azotobacter vinelandii. The G + C content, phylogeny inference and codon usage analysis showed that the phaBAC cluster itself has a complex mosaic structure and indicated that the phaB and phaC genes were acquired by horizontal transfer, probably derived from Burkholderiales. These results describe for the first time a pha cluster located within a genomic island, and suggest that horizontal transfer of pha genes is a mechanism of adaptability to stress conditions such as those found in the extreme Antarctic environment.
Palabras clave: Antarctica , Genomic Islands , Polyhydroxyalkanoates , Pseudomonas
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)
Identificadores
URI: http://hdl.handle.net/11336/74940
DOI: http://dx.doi.org/10.1016/j.plasmid.2007.05.003
URL: https://www.sciencedirect.com/science/article/pii/S0147619X07000741
Colecciones
Articulos(IQUIBICEN)
Articulos de INSTITUTO DE QUIMICA BIOLOGICA DE LA FACULTAD DE CS. EXACTAS Y NATURALES
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Citación
Ayub, Nicolás Daniel; Pettinari, María Julia; Mendez, Beatriz Silvia; López, Nancy Irene; The polyhydroxyalkanoate genes of a stress resistant Antarctic Pseudomonas are situated within a genomic island; Academic Press Inc Elsevier Science; Plasmid; 58; 3; 11-2007; 240-248
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