Abstract:
:Although bacterial genomes have been traditionally viewed as being very compact, with relatively low amounts of repetitive and non-coding DNA, this view has dramatically changed in recent years. The increase of available complete bacterial genomes has revealed that many species present abundant repetitive DNA (i.e., insertion sequences, prophages or paralogous genes) and that many of these sequences are not functional but can have evolutionary consequences as concerns the adaptation to specialized host-related ecological niches. Comparative genomics analyses with close relatives that live in non-specialized environments reveal the nature and fate of this bacterial junk DNA. In addition, the number of insertion sequences and pseudogenes, as well as the size of the intergenic regions, can be used as markers of the evolutionary stage of a genome.
journal_name
Genes (Basel)journal_title
Genesauthors
Gil R,Latorre Adoi
10.3390/genes3040634subject
Has Abstractpub_date
2012-10-12 00:00:00pages
634-50issue
4issn
2073-4425pii
genes3040634journal_volume
3pub_type
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