Obiettivo Eukarya – one of the three Domains of Life along with Archaea and Bacteria (i.e. prokaryotes) – include all complex multicellular life forms, as well as a colossal diversity of unicellular microorganisms. At the cellular level, the gap between prokaryotes and eukaryotes is immense, with the latter cell types displaying a large number of complex subcellular organelles and molecular systems. The evolutionary origin of these unique features, and thus of the eukaryotic cell itself, remains one of the most fascinating enigmas in modern biology. Although many eukaryotic-signature proteins (ESPs) are known to trace back to the last eukaryotic common ancestor, their deeper evolutionary origins remain unclear. The major goal of the current proposal is to illuminate the prokaryote to eukaryote transition by elucidating the origin and subsequent evolution of ESPs, as well as their order of emergence. We will focus on the ESPs of archaeal origin with an emphasis on the specific contribution of the newly discovered Lokiarchaeota lineages to the origin of the eukaryotic cell. In addition, we will aim to determine the placement the eukaryote lineage within the tree of Life and infer the age of the “first eukaryote”. Finally, we will use a novel phylogenomic approach to infer the gene content of the archaeal ancestors of eukaryotes by mapping the evolution of ESPs along the tree of Life. For this purpose, we will analyse entirely novel genomic data from several uncultivated Lokiarchaeota lineages, as well as novel sequence data from deep-branching key eukaryotes. This project will integrate approaches from distinct disciplines within life sciences and computational sciences (including molecular evolution, genomics/metagenomics and cell biology), with a strong emphasis on phylogenomics. Altogether, the innovative nature of this work combined with state-of-the-art methods and novel key genome data will allow to gain unprecedented insights in the origin and early evolution of Eukarya. Campo scientifico natural scienceschemical sciencesorganic chemistryhydrocarbonsnatural sciencesbiological sciencesevolutionary biologynatural sciencescomputer and information sciencescomputational sciencenatural sciencesbiological sciencesgeneticsgenomesnatural sciencesbiological sciencesmolecular biologymolecular evolution Programma(i) H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions Main Programme H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility Argomento(i) MSCA-IF-2015-EF - Marie Skłodowska-Curie Individual Fellowships (IF-EF) Invito a presentare proposte H2020-MSCA-IF-2015 Vedi altri progetti per questo bando Meccanismo di finanziamento MSCA-IF-EF-ST - Standard EF Coordinatore UPPSALA UNIVERSITET Contribution nette de l'UE € 173 857,20 Indirizzo VON KRAEMERS ALLE 4 751 05 Uppsala Svezia Mostra sulla mappa Regione Östra Sverige Östra Mellansverige Uppsala län Tipo di attività Higher or Secondary Education Establishments Collegamenti Contatta l’organizzazione Opens in new window Sito web Opens in new window Partecipazione a programmi di R&I dell'UE Opens in new window Rete di collaborazione HORIZON Opens in new window Costo totale € 173 857,20
