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The Subcellular Localisation of the Human Papillomavirus (HPV) 16 E7 Protein in Cervical Cancer Cells and Its Perturbation by RNA Aptamers
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Viruses 2015, 7(7), 3530-3551;

The Human Papillomavirus E6 PDZ Binding Motif: From Life Cycle to Malignancy

International Center for Genetic Engineering and Biotechnology, Area Science Park, Padriciano 99, Trieste 34149, Italy
Author to whom correspondence should be addressed.
Academic Editor: Joanna Parish
Received: 6 May 2015 / Revised: 24 June 2015 / Accepted: 25 June 2015 / Published: 2 July 2015
(This article belongs to the Special Issue Tumour Viruses)
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Cancer-causing HPV E6 oncoproteins are characterized by the presence of a PDZ binding motif (PBM) at their extreme carboxy terminus. It was long thought that this region of E6 had a sole function to confer interaction with a defined set of cellular substrates. However, more recent studies have shown that the E6 PBM has a complex pattern of regulation, whereby phosphorylation within the PBM can regulate interaction with two classes of cellular proteins: those containing PDZ domains and the members of the 14-3-3 family of proteins. In this review, we explore the roles that the PBM and its ligands play in the virus life cycle, and subsequently how these can inadvertently contribute towards the development of malignancy. We also explore how subtle alterations in cellular signal transduction pathways might result in aberrant E6 phosphorylation, which in turn might contribute towards disease progression. View Full-Text
Keywords: HPV; E6; PDZ; 14-3-3; cell polarity HPV; E6; PDZ; 14-3-3; cell polarity

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Ganti, K.; Broniarczyk, J.; Manoubi, W.; Massimi, P.; Mittal, S.; Pim, D.; Szalmas, A.; Thatte, J.; Thomas, M.; Tomaić, V.; Banks, L. The Human Papillomavirus E6 PDZ Binding Motif: From Life Cycle to Malignancy. Viruses 2015, 7, 3530-3551.

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