BEGIN:VCALENDAR VERSION:2.0 PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4// BEGIN:VEVENT UID:20251106T153935EST-46266JI3In@132.216.98.100 DTSTAMP:20251106T203935Z DESCRIPTION:Dr. Michelle Scott\nPhD\nCollege of Life Sciences\nUniversity o f Dundee\, United Kingdom\n“Bioinformatic characterization of the nucleolu s”\n \nAlthough primarily known for its role in the biogenesis of\nribosom es\, the nucleolus is involved in numerous other fundamental\ncellular act ivities\, including cell cycle progression\,\nproliferation regulation and the response to numerous forms of\ncellular stress. Recent large scale pr oteomics projects have\nidentified thousands of nucleolar-associated prote ins\, many of\nwhich are dynamically localized to this compartment under d ifferent\nconditions\, revealing cyclical and conditional nucleolar\nassoc iation. To understand the numerous roles of the nucleolus in\nthe cell\, i t is necessary to define the complete dynamic nucleolar\nproteome and char acterize its resulting interaction network.\n \nTo address these questions \, we have investigated the most\nwell-known form of targeting to the nucl eolus and created an\nartificial neural network predictor of nucleolar loc alization\nsequences (NoLSs). We predict over 50% of proteins annotated as \nnucleolar in Uniprot to harbour a NoLS\, suggesting this is a widely\nus ed mechanism. We have also investigated the extent of nucleolar\nassociati on of human proteins by integrating gene and protein\ncharacteristics into a probabilistic framework\, thus extending the\ncoverage of the nucleolar proteome past the current experimental\ndetection limits. These predictio ns reveal that approximately 15%\nof human proteins are nucleolar-associat ed and that this group is\nsignificantly more evolutionarily conserved tha n non-nucleolar\nproteins. This characterization of the complete dynamic n ucleolar\nproteome has been used to filter and annotate our human predicte d\ninteractome (http://www.compbio.dundee.ac.uk/www-pips/index.jsp)\,\nwhi ch will be augmented to include the known nucleolar RNA content\nand its r elationship to the nucleolar proteome.\n \n \nScott MS\, Avolio F\, Ono M\ , Lamond AI\, Barton GJ (2009)\, Human\nmiRNA precursors with box H/ACA sn oRNA features\, PLoS Comp Biol\,\n5(9):e1000507.\n \nMcDowall MD\, Scott M S\, Barton GJ\, (2009) PIPs: human\nprotein-protein interaction prediction database\, Nucleic Acids\nResearch\, 37(Database issue):D651-6.\n \nScott MS and Barton GJ (2007) Probabilistic prediction and\nranking of human pr otein-protein interactions\, BMC Bioinformatics\n8(1):239.\n \nScott M\, B oisvert FM\, Vieyra D\, Johnston RN\, Bazett-Jones DP\,\nRiabowol K\, (200 1)\, UV induces nucleolar translocation of ING1\nthrough two distinct nucl eolar targeting sequences\, Nucleic Acids\nResearch\, 29(10): 2052-8.\n DTSTART:20100511T140000Z DTEND:20100511T140000Z LOCATION:McIntyre Medical Building\, CA\, QC\, Montreal\, H3G 1Y6\, 3655 pr omenade Sir William Osler SUMMARY:Biochemistry Seminar Dr. Michelle Scott URL:/channels/event/biochemistry-seminar-dr-michelle-s cott-116935 END:VEVENT END:VCALENDAR