Accepted_test

We searched for dispersed repeats using the IP method in the genomes of bacteria from 42 phyla. In each genome, a family of repeats was identified with copy numbers ranging from 10³ to 1.4x10⁴, depending on the bacterial genome. Repeat lengths range from 450 to 580 bases. More than 90% of the detected repeats are superimposed as a motif on coding sequences, and the repeats occupy from 30 to 50% of the bacterial genome. The repeats contain conserved islands interspersed with weakly similar regions. The presence of which repeats in the bacterial genome is similar to the formatting of a computer hard drive. We hypothesize that the detected repeat families may be involved in the formation of the bacterial nucleoid.