Cel The human genome is composed of 3 billion base pairs of DNA that are replicated prior to every cell division with an astonishing accuracy. High-fidelity replication is necessary to maintain genome stability, and hence to avoid premature ageing and cancer. This project aims at understanding the role of the iron-sulphur (FeS) cluster in human DNA polymerase delta (Pol δ), one of the major replicases.FeS clusters are ancient and versatile co-factors that are commonly known for their function in electron transport in the mitochondrial respiratory chain. In recent years, a surprising number of proteins involved in DNA metabolism have been discovered to contain an FeS cluster including all replicative DNA polymerases in yeast. While the requirement of an FeS cluster for the function of replicases was demonstrated, the actual role of the FeS cluster in these enzymes has remained largely elusive. The TRISCPOL project aims to: 1) Confirm and characterise the FeS cluster in human Pol δ by using iron incorporation assays, UV-visible and electron paramagnetic resonance spectroscopy. 2) Determine the role of the FeS cluster in human Pol δ in vitro. Purified Pol δ will be subjected to oxidative stress conditions, and then changes in structural and functional features will be measured. A combination of techniques including deuterium-hydrogen exchange mass spectrometry, as well as DNA binding, DNA synthesis, processivity and fidelity assays, will be employed. 3) Define the role of the FeS cluster in human Pol δ in vivo. Mutants in the FeS cluster-binding region will be engineered and tested for their ability to functionally complement cells depleted of endogenous Pol δ.Unveiling the role of the FeS cluster in human Pol δ will shed new light on the principle of eukaryotic DNA replication. Moreover, this knowledge will contribute to our understanding of the molecular basis of cancer and may eventually allow the development of novel strategies of treatment. Dziedzina nauki natural sciencesbiological sciencesgeneticsDNAmedical and health sciencesclinical medicineoncologynatural scienceschemical sciencesanalytical chemistrymass spectrometrynatural sciencesbiological sciencesgeneticsgenomesnatural sciencesbiological sciencesbiochemistrybiomoleculesproteinsenzymes Program(-y) 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 Temat(-y) MSCA-IF-2015-EF - Marie Skłodowska-Curie Individual Fellowships (IF-EF) Zaproszenie do składania wniosków H2020-MSCA-IF-2015 Zobacz inne projekty w ramach tego zaproszenia System finansowania MSCA-IF-EF-ST - Standard EF Koordynator UNIVERSITAT ZURICH Wkład UE netto € 187 419,60 Adres RAMISTRASSE 71 8006 Zurich Szwajcaria Zobacz na mapie Region Schweiz/Suisse/Svizzera Zürich Zürich Rodzaj działalności Higher or Secondary Education Establishments Linki Kontakt z organizacją Opens in new window Strona internetowa Opens in new window Uczestnictwo w unijnych programach w zakresie badań i innowacji Opens in new window sieć współpracy HORIZON Opens in new window Koszt całkowity € 187 419,60
