Unique Features of Tandem Repeats in Bacteria.
Bacillus
Bacillus coagulans
Leptospira interrogans
bacterial nucleoid
noncoding DNA
satellites
tandem repeats
transcription factors
Journal
Journal of bacteriology
ISSN: 1098-5530
Titre abrégé: J Bacteriol
Pays: United States
ID NLM: 2985120R
Informations de publication
Date de publication:
08 10 2020
08 10 2020
Historique:
received:
20
04
2020
accepted:
17
08
2020
pubmed:
26
8
2020
medline:
10
4
2021
entrez:
26
8
2020
Statut:
epublish
Résumé
DNA tandem repeats, or satellites, are well described in eukaryotic species, but little is known about their prevalence across prokaryotes. Here, we performed the most complete characterization to date of satellites in bacteria. We identified 121,638 satellites from 12,233 fully sequenced and assembled bacterial genomes with a very uneven distribution. We also determined the families of satellites which have a related sequence. There are 85 genomes that are particularly satellite rich and contain several families of satellites of yet unknown function. Interestingly, we only found two main types of noncoding satellites, depending on their repeat sizes, 22/44 or 52 nucleotides (nt). An intriguing feature is the constant size of the repeats in the genomes of different species, whereas their sequences show no conservation. Individual species also have several families of satellites with the same repeat length and different sequences. This result is in marked contrast with previous findings in eukaryotes, where noncoding satellites of many sizes are found in any species investigated. We describe in greater detail these noncoding satellites in the spirochete
Identifiants
pubmed: 32839174
pii: JB.00229-20
doi: 10.1128/JB.00229-20
pmc: PMC7549362
pii:
doi:
Substances chimiques
DNA, Bacterial
0
DNA, Satellite
0
Banques de données
Dryad
['10.5061/dryad.h5s2q']
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
Copyright © 2020 American Society for Microbiology.
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