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dc.contributor.advisorSheng, Yi
dc.creatorEgorova, Olga
dc.description.abstractHuman E3 ligase Mdm2 is an oncogene. Its amplification and overexpression have been found in many types of cancers. Mdm2 inhibits tumour suppressor p53 by regulating its stability through Mdm2 RING-mediated ubiquitination. Suppression of this process is the promising anti-cancer therapeutic approach. The objectives of this project were to employ biochemical methods to investigate the active site of Mdm2 RING in vitro through a mutational analysis of the homologous MdmX RING domain, and to elucidate functions of Mdm2 and MdmX RING in vivo. As a result, amino acid residues within the dimerization and E2 binding regions potentially involved in the Mdm2 RING-mediated ubiquitin transfer mechanism were identified. Furthermore, a suppressive effect of the Mdm2 and MdmX RING domains on p53 transcriptional activity was determined in vivo. Together, this study provides new insight into the function of Mdm2 RING and opens further perspective on the rational drug design to treat cancer.
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectCellular biology
dc.titleStructural and Functional Characterization of the Human Mdm2 and MdmX RING Domains
dc.typeElectronic Thesis or Dissertationen_US - Master of Science's
dc.subject.keywordsRING domain
dc.subject.keywordsUbiquitin transfer mechanism
dc.subject.keywordsMdm2 and MdmX gene splice variants
dc.subject.keywordsMdm2 RING inhibitors

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