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http://purl.uniprot.org/citations/18471277http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/18471277http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/18471277http://www.w3.org/2000/01/rdf-schema#comment"

Background

Dss1 (or Rpn15) is a recently identified subunit of the 26S proteasome regulatory particle. In addition to its function in the protein degradation machinery, it has been linked to BRCA2 (breast cancer susceptibility gene 2 product) and homologous DNA recombination, mRNA export, and exocytosis. While the fungal orthologues of Dss1 are not essential for viability, the significance of Dss1 in metazoans has remained unknown due to a lack of knockout animal models.

Results

In the current study deletion of dss-1 was studied in Caenorhabditis elegans with a dss-1 loss-of-function mutant and dss-1 directed RNAi. The analysis revealed an essential role for dss-1 in oogenesis. In addition, dss-1 RNAi caused embryonic lethality and larval arrest, presumably due to loss of the dss-1 mRNA maternal contribution. DSS-1::GFP fusion protein localised primarily in the nucleus. No apparent effect on proteasome function was found in dss-1 RNAi treated worms. However, expression of the C. elegans dss-1 in yeast cells deleted for its orthologue SEM1 rescued their temperature-sensitive growth phenotype, and partially rescued the accumulation of polyubiquitinated proteins in these cells.

Conclusion

The first knockout animal model for the gene encoding the proteasome subunit DSS-1/Rpn15/Sem1 is characterised in this study. In contrast to unicellular eukaryotes, the C. elegans dss-1 encodes an essential protein, which is required for embryogenesis, larval growth, and oogenesis, and which is functionally conserved with its yeast and human homologues."xsd:string
http://purl.uniprot.org/citations/18471277http://purl.org/dc/terms/identifier"doi:10.1186/1471-213x-8-51"xsd:string
http://purl.uniprot.org/citations/18471277http://purl.org/dc/terms/identifier"doi:10.1186/1471-213x-8-51"xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/author"Holmberg C.I."xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/author"Holmberg C.I."xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/author"Jantti J."xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/author"Jantti J."xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/author"Palmen S."xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/author"Palmen S."xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/author"Pispa J."xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/author"Pispa J."xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/date"2008"xsd:gYear
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/date"2008"xsd:gYear
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/name"BMC Dev. Biol."xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/name"BMC Dev. Biol."xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/pages"51"xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/pages"51"xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/title"C. elegans dss-1 is functionally conserved and required for oogenesis and larval growth."xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/title"C. elegans dss-1 is functionally conserved and required for oogenesis and larval growth."xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/volume"8"xsd:string
http://purl.uniprot.org/citations/18471277http://purl.uniprot.org/core/volume"8"xsd:string
http://purl.uniprot.org/citations/18471277http://www.w3.org/2004/02/skos/core#exactMatchhttp://purl.uniprot.org/pubmed/18471277
http://purl.uniprot.org/citations/18471277http://www.w3.org/2004/02/skos/core#exactMatchhttp://purl.uniprot.org/pubmed/18471277
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