Gutell R R, Noller H F, Woese C R
EMBO J. 1986 May;5(5):1111-3. doi: 10.1002/j.1460-2075.1986.tb04330.x.
The only reliable general method currently available for determining precise higher order structure in the large ribosomal RNAs is comparative sequence analysis. The method is here applied to reveal 'tertiary' structure in the 16S-like rRNAs, i.e. structure more complex than simple double-helical, secondary structure. From a list of computer-generated potential higher order interactions within 16S rRNA one such interaction considered likely was selected for experimental test. The putative interaction involves a Watson-Crick one to one correspondence between positions 570 and 866 in the molecule (E. coli numbering). Using existing oligonucleotide catalog information several organisms were selected whose 16S rRNA sequences might test the proposed co-variation. In all of the (phylogenetically independent) cases selected, full sequence evidence confirms the predicted one to one (Watson-Crick) correspondence. An interaction between positions 570 and 866 is, therefore, considered proven phylogenetically.
目前唯一可用于确定大型核糖体RNA精确高级结构的可靠通用方法是比较序列分析。该方法在此用于揭示16S样rRNA中的“三级”结构,即比简单双螺旋二级结构更复杂的结构。从16S rRNA内计算机生成的潜在高阶相互作用列表中,选择了一种被认为可能的相互作用进行实验测试。假定的相互作用涉及分子中第570位和第866位之间的沃森-克里克一对一对应关系(大肠杆菌编号)。利用现有的寡核苷酸目录信息,选择了几种生物,其16S rRNA序列可能测试所提出的共变。在所有选定的(系统发育独立的)案例中,完整的序列证据证实了预测的一对一(沃森-克里克)对应关系。因此,第570位和第866位之间的相互作用被认为在系统发育上得到了证实。