弧菌通常有两条染色体。
Vibrios commonly possess two chromosomes.
作者信息
Okada Kazuhisa, Iida Tetsuya, Kita-Tsukamoto Kumiko, Honda Takeshi
机构信息
Department of Bacterial Infections, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
出版信息
J Bacteriol. 2005 Jan;187(2):752-7. doi: 10.1128/JB.187.2.752-757.2005.
Abstract
The prevalence of the two-chromosome configuration was investigated in 34 species of vibrios and closely related species. Pulsed-field gel electrophoresis of undigested genomic DNA suggested that vibrios commonly have two chromosomes. The size of the large chromosome is predominantly within a narrow range (3.0 to 3.3 Mb), whereas the size of the small chromosome varies considerably among the vibrios (0.8 to 2.4 Mb). This fact suggests that the structure of the small chromosome is more flexible than that of the large chromosome during the evolution of vibrios.
摘要
在34种弧菌及亲缘关系密切的菌种中研究了双染色体构型的流行情况。未消化基因组DNA的脉冲场凝胶电泳表明，弧菌通常有两条染色体。大染色体的大小主要在一个狭窄范围内（3.0至3.3兆碱基），而小染色体的大小在弧菌中差异很大（0.8至2.4兆碱基）。这一事实表明，在弧菌进化过程中，小染色体的结构比大染色体更具灵活性。
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