The distinctive signatures of promoter regions and operon junctions across prokaryotes
نویسندگان
چکیده
منابع مشابه
The distinctive signatures of promoter regions and operon junctions across prokaryotes
Here we show that regions upstream of first transcribed genes have oligonucleotide signatures that distinguish them from regions upstream of genes in the middle of operons. Databases of experimentally confirmed transcription units do not exist for most genomes. Thus, to expand the analyses into genomes with no experimentally confirmed data, we used genes conserved adjacent in evolutionarily dis...
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Transcriptional activation or 'rewiring' of silent genes is an important, yet poorly understood, phenomenon in prokaryotic genomes. Anecdotal evidence coming from experimental evolution studies in bacterial systems has shown the promptness of adaptation upon appropriate selective pressure. In many cases, a partial or complete promoter is mobilized to silent genes from elsewhere in the genome. W...
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Anecdotal evidence shows promoters being reused separate from their downstream gene, thus providing a mechanism for the efficient and rapid rewiring of a gene's transcriptional regulation. We have identified over 4000 groups of highly similar promoters using a conservative sequence similarity search in all fully sequenced prokaryotic genomes. About 6% of those groups are shared between bacteria...
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ژورنال
عنوان ژورنال: Nucleic Acids Research
سال: 2006
ISSN: 0305-1048,1362-4962
DOI: 10.1093/nar/gkl563