蜡样芽孢杆菌菌株中rRNA基因操纵子数量的变化
Variable numbers of rRNA gene operons in Bacillus cereus strains.
作者信息
Johansen T, Carlson C R, Kolstø A B
机构信息
Institute of Pharmacy and Biotechnology Centre of Oslo, University of Oslo, Norway.
出版信息
FEMS Microbiol Lett. 1996 Mar 1;136(3):325-8. doi: 10.1111/j.1574-6968.1996.tb08068.x.
Ribosomal RNA operon organisation was analysed in two Bacillus cereus strains of different chromosome size, ATCC 10987 (5.4 Mb) and F0837/76 (2.4 Mb). We estimated that there were twelve and nine copies of the rRNA operons in these two strains, respectively. In B. cereus ATCC 10987 six rRNA operons were less than 10 kb apart, while in B. cereus F0837/76 four rRNA operons were similarly clustered. The origin of replication was located in the vicinity of a rRNA operon in both strains.
对两株染色体大小不同的蜡样芽孢杆菌菌株（ATCC 10987，5.4 Mb；F0837/76，2.4 Mb）的核糖体RNA操纵子组织进行了分析。我们估计这两株菌株中分别有12个和9个rRNA操纵子拷贝。在蜡样芽孢杆菌ATCC 10987中，6个rRNA操纵子彼此间隔小于10 kb，而在蜡样芽孢杆菌F0837/76中，4个rRNA操纵子也以类似方式成簇排列。两株菌株的复制起点均位于一个rRNA操纵子附近。
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