Abstract:
:RBD-1 is the Caenorhabditis elegans homolog of Mrd1p, which was recently shown to be required for 18S ribosomal RNA (rRNA) processing in yeast. To gain insights into the relationship between ribosome biogenesis and the development of multicellular organisms, we examined the expression and function of RBD-1. Maternal RBD-1 in the fertilized egg disappears immediately after cleavage starts, whereas zygotic RBD-1 first appears in late embryos and is localized in the nucleolus in most cells, although zygotic transcription of pre-rRNA is known to be initiated as early as the one-cell stage. RNA interference of the rbd-1 gene severely inhibits the processing of 18S rRNA in association with various developmental abnormalities, indicating its essential role in pre-rRNA processing and development in C.elegans. These results provide evidence for the linkage between ribosome biogenesis and the control of development and imply unexpected uncoupling of transcription and processing of pre-rRNA in early C.elegans embryos.
journal_name
Nucleic Acids Resjournal_title
Nucleic acids researchauthors
Saijou E,Fujiwara T,Suzaki T,Inoue K,Sakamoto Hdoi
10.1093/nar/gkh264keywords:
subject
Has Abstractpub_date
2004-02-10 00:00:00pages
1028-36issue
3eissn
0305-1048issn
1362-4962pii
32/3/1028journal_volume
32pub_type
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