一个果蝇核糖体蛋白基因位于包括核糖体DNA序列在内的重复序列附近。

Fabijanski S, Pellegrini M

Nucleic Acids Res. 1982 Oct 11;10(19):5979-91. doi: 10.1093/nar/10.19.5979.

We have isolated a cloned segment of Drosophila genomic DNA containing a ribosomal protein gene. Hybridization analysis of the DNA in this clone indicates a complex organization of repeated elements within this cloned segment. At least one of these repeated elements is homologous to regions of rDNA. Restriction analysis of the clone shows that some of the repeated elements are present as tandem duplications and in scattered locations within the cloned DNA segment. There are also three non-ribosomal protein genes contained in this clone, each of which is expressed along with the ribosomal protein gene into RNA species present in Drosophila embryos.

我们分离出了一段含有核糖体蛋白基因的果蝇基因组DNA克隆片段。对该克隆中的DNA进行杂交分析表明，此克隆片段内存在重复元件的复杂组织形式。这些重复元件中至少有一个与rDNA区域同源。对该克隆进行的限制性分析表明，一些重复元件以串联重复的形式存在，并且分散在克隆的DNA片段中。该克隆中还包含三个非核糖体蛋白基因，每个基因都与核糖体蛋白基因一起表达为果蝇胚胎中存在的RNA种类。