Tandem Repeats in Bacillus: Unique Features and Taxonomic Distribution.

ABSTRACT: Little is known about DNA tandem repeats across prokaryotes. We have recently described an enigmatic group of tandem repeats in bacterial genomes with a constant repeat size but variable sequence. These findings strongly suggest that tandem repeat size in some bacteria is under strong selective constraints. Here, we extend these studies and describe tandem repeats in a large set of Bacillus. Some species have very few repeats, while other species have a large number. Most tandem repeats have repeats with a constant size (either 52 or 20-21 nt), but a variable sequence. We characterize in detail these intriguing tandem repeats. Individual species have several families of tandem repeats with the same repeat length and different sequence. This result is in strong contrast with eukaryot

SUBMITTER: Subirana JA 

PROVIDER: S-EPMC8161180 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature