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Xanthomonas Campestris pv . badrii 5S rRNA 의 고차원 구조
심윤보,조봉래,이영훈,박인원 ( Yoonbo Sim,Bongrae Cho,Younghoon Lee,Inwon Park ) 생화학분자생물학회 1994 BMB Reports Vol.27 No.5
The 5S rRNA of Xanthomonas campesMs pv. badrii (ATCC 11672) was isolated and its primary and secondary structures were determined by enzymatic and chemical modification methods. There are two 5S rRNA species in X. badrii. Its major species consists of 120 nucleotides and its minor species is composed of 119 nucleotides lacking the 3`-terminal uridine residue. Except for the 3`-terminal nucleotide, two species have the same nucleotide sequence and contain no modified nucleosides. The secondary structure of the 5S rRNA of X. badrii is nearly identical to the secondary structure model previously proposed by us for the 5S rF~NAs of four Xanthomonas species examined. The 5S rRNA of X. campestris pv. badrii has adenosine residue at position 66 as bulge, while those of the other four Xanthomonas species have uridine residues at this position. The higher order structure of the 5S rRNA was analysed by using chemical probes, such as dimethyl sulfate, diethyl pyrocarbonate and Fe(II)-EDTA. It is deduced that loop c interacts with loop d or a alternatively, or othenuise loop c interacts with loop d and c coincidentally. It is also assumed that, in order to make its tertiary interaction possible, loop b may act as a hinge in the folding of 5S rRNA