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Viruses 2015, 7(6), 2858-2883; doi:10.3390/v7062750

Protein-Protein Interactions of Viroporins in Coronaviruses and Paramyxoviruses: New Targets for Antivirals?

School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore
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Academic Editors: José Luis Nieva and Luis Carrasco
Received: 24 April 2015 / Revised: 21 May 2015 / Accepted: 28 May 2015 / Published: 4 June 2015
(This article belongs to the Special Issue Viroporins)
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Abstract

Viroporins are members of a rapidly growing family of channel-forming small polypeptides found in viruses. The present review will be focused on recent structural and protein-protein interaction information involving two viroporins found in enveloped viruses that target the respiratory tract; (i) the envelope protein in coronaviruses and (ii) the small hydrophobic protein in paramyxoviruses. Deletion of these two viroporins leads to viral attenuation in vivo, whereas data from cell culture shows involvement in the regulation of stress and inflammation. The channel activity and structure of some representative members of these viroporins have been recently characterized in some detail. In addition, searches for protein-protein interactions using yeast-two hybrid techniques have shed light on possible functional roles for their exposed cytoplasmic domains. A deeper analysis of these interactions should not only provide a more complete overview of the multiple functions of these viroporins, but also suggest novel strategies that target protein-protein interactions as much needed antivirals. These should complement current efforts to block viroporin channel activity. View Full-Text
Keywords: coronavirus; envelope protein; respiratory syncytial virus; small hydrophobic protein; cytoplasmic helical domains; protein-protein interactions coronavirus; envelope protein; respiratory syncytial virus; small hydrophobic protein; cytoplasmic helical domains; protein-protein interactions
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Torres, J.; Surya, W.; Li, Y.; Liu, D.X. Protein-Protein Interactions of Viroporins in Coronaviruses and Paramyxoviruses: New Targets for Antivirals? Viruses 2015, 7, 2858-2883.

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