Chernov V M, Markina O S, Chernova O A
Institute of Biology, Russian Academy of Sciences, Kazan, Russia.
Microbios. 1996;86(346):19-22.
Repeated nucleotide sequences fitting the motif TGTTTGAAAAACTGA have been found in the Mycoplasma bovis genome. The tetradecamer sequences are also in spacer regions of rRNA operons of some species of Mollicutes. The sequences look like the DNA sites recognized by topoisomerase I from Tetrahymena pyriformis. Imperfect copies of the sequences are known to be in genomes of viruses, lower and higher eukaryotes.
在牛支原体基因组中发现了符合TGTTTGAAAAACTGA基序的重复核苷酸序列。这些十四聚体序列也存在于某些柔膜菌纲物种的rRNA操纵子的间隔区。这些序列看起来像梨形四膜虫拓扑异构酶I识别的DNA位点。已知这些序列的不完美拷贝存在于病毒、低等和高等真核生物的基因组中。
