Objective Nuclear surveillance and degradation of aberrant RNA requires the TRAMP complex, which promotes exosome-mediated degradation in the nucleus by adding poly (A) tails to aberrant RNAs. Interestingly, a mutant yeast strain defective in nuclear export of 60S preribosomes (sda1-2) accumulates ribosomal proteins, the TRAMP complex and the nuclear exosome in a punctate nucleolar structure, suggesting that preribosomes are degraded here.To address if in this structure is a general site for TRAMP-exosome mediated degradation of polyadenylated non-coding RNAs, I will use several fluorescence microscopy detection techniques to determine if other known degradation enzymes and non-coding RNAs targeted for degradation accumulate in this focus. Pre-mRNA surveillance by the nuclear exosome involves interactions with chromatin, transcription elongation factors, pre-mRNA processing factors and export factors and likely occurs co-transcriptionally. To determine if a similar surveillance mechanism exists for pre-rRNA processing. Fields of science natural sciencesbiological sciencescell biologynatural sciencesphysical sciencesopticsmicroscopymedical and health sciencesclinical medicineoncologynatural sciencesbiological sciencesgeneticsRNAnatural sciencesbiological sciencesbiochemistrybiomoleculesproteinsenzymes Keywords RNA surveillance TRAMP chromatin immunoprecipitation exosome nucleus ribosomal RNA ribosome biogenesis Programme(s) FP6-MOBILITY - Human resources and Mobility in the specific programme for research, technological development and demonstration "Structuring the European Research Area" under the Sixth Framework Programme 2002-2006 Topic(s) MOBILITY-2.1 - Marie Curie Intra-European Fellowships (EIF) Call for proposal FP6-2005-MOBILITY-5 See other projects for this call Funding Scheme EIF - Marie Curie actions-Intra-European Fellowships Coordinator THE UNIVERSITY OF EDINBURGH EU contribution No data Address Old College, South Bridge EDINBURGH United Kingdom See on map Links Website Opens in new window Total cost No data
