The oncoprotein E6 which plays a crucial role in the process of carcinogenesis induced by HPV, has withstood all tests for a long time. Since 1995 the team « oncoproteins » has focused on this issue. This allowed the resolution of structure of C-terminal domain of E6 by NMR analysis, in 2006. In this context, i started my PhD in 2008 with aim to continue the pursuit of structural data on E6 while also acquiring information about its modes of interaction with its cellular targets. The work of this thesis has enabled us to obtain the crystal structure of E6 (HPV16) in complex with a peptide of E6AP, using an original approach capable of producing stable and soluble proteins E6. This structure represents the first structural information on full-length E6, awaited for over 20 years by the scientific community. I also performed during this thesis an analysis of the interaction system of the E6 protein based on a large study of interaction between proteins E6 (7 types) and 93 peptides bearing LxxLL motif.
Biochemical and structural analysis of multiple interactions of the oncoprotein E6 produced by papillomavirus