支原体（柔膜菌纲）的核糖体RNA基因数量较少。
Mycoplasmas (Mollicutes) have a low number of rRNA genes.
作者信息
Amikam D, Glaser G, Razin S
出版信息
J Bacteriol. 1984 Apr;158(1):376-8. doi: 10.1128/jb.158.1.376-378.1984.
Abstract
DNA from Mycoplasma, Ureaplasma, Acholeplasma, and Spiroplasma species digested by restriction endonucleases was hybridized with probes consisting of portions of the rrnB rRNA operon of Escherichia coli and the rRNA operon of Mycoplasma capricolum. The results indicate the presence of only one or two sets of rRNA genes in the genome of Mollicutes linked in the procaryotic fashion, 16S-23S-5S.
摘要
经限制性内切酶消化的支原体、脲原体、无胆甾原体和螺原体属物种的DNA，与由大肠杆菌rrnB rRNA操纵子部分和山羊支原体rRNA操纵子组成的探针进行杂交。结果表明，柔膜菌纲基因组中仅存在一或两组以原核方式连接的rRNA基因，即16S - 23S - 5S。
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