English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/128505
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Unconventional lateral gene transfer in extreme thermophilic bacteria.

AuthorsCésar, Carolina E.; Álvarez, Laura ; Bricio, Carlos; Heerden, Esta van; Berenguer, José
Lateral gene transfer (LGT)
Issue Date2011
PublisherSociedad Española de Microbiología
CitationInternational Microbiology 14: 187- 199 (2011)
AbstractConjugation and natural competence are two major mechanisms that explain the acquisition of foreign genes throughout bacterial evolution. In recent decades, several studies in model organisms have revealed in great detail the steps involved in such processes. The findings support the idea that the major basis of these mechanisms is essentially similar in all bacteria. However, recent work has pinpointed the existence of new, evolutionarily different processes underlying lateral gene transfer. In Thermus thermophilus HB27, at least 16 proteins are required for the activity of one of the most efficient natural competence systems known so far. Many of those proteins have no similarities to proteins involved in natural competence in other well-known models. This unusual competence system is conserved, in association with the chromosome, in all other Thermus spp. genomes so far available, it being functional even in strains from isolated environments, such as deep mines. Conjugation is also possible among Thermus spp. Homologues to proteins implicated in conjugation in model bacteria are encoded in the genome of a recently sequenced strain of Thermus thermophilus and shared by other members of the genus. Nevertheless, processive DNA transfer in the absence of a functional natural competence system in strains in which no conjugation homologous genes can be found hints at the existence of an additional and unconventional conjugation mechanism in these bacteria. [Int Microbiol 2011; 14(4):187-199]
Identifiersissn: 1139-6709
Appears in Collections:(CBM) Artículos
Files in This Item:
File Description SizeFormat 
BerenguerJ_UnconventionalLateralGene.pdf220,01 kBAdobe PDFThumbnail
Show full item record
Review this work

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.