کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2436421 | 1107308 | 2008 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Identification of nucleoli in the early branching protist Giardia duodenalis Identification of nucleoli in the early branching protist Giardia duodenalis](/preview/png/2436421.png)
Giardia duodenalis has been described as ‘anucleolated’. In this work we analysed the subcellular distribution of several nucleolar markers in Giardia nuclei using silver and immunostaining techniques for electron and confocal laser microscopy as well as expression of epitope-tagged proteins in transgenic trophozoites. We identified anteronuclear fibrogranular structures corresponding to nucleolar organising regions with recruited ribonucleoprotein complexes, rRNA and epitope-tagged fibrillarin and rRNA-pseudouridine synthase (CBF5). Recombinant fibrillarin and CBF5 were targeted to this subcompartment. This study demonstrates the presence of nucleoli in G. duodenalis and provides a model to analyse minimal requirements for nucleolar assembly and maintenance in eukaryotic cells.
Journal: International Journal for Parasitology - Volume 38, Issue 11, September 2008, Pages 1297–1304