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Preparation of the expression vectors for the production of fusion protein NS2-NS3 of Dengue and Zika viruses
Novotný, Pavel ; Konvalinka, Jan (advisor) ; Vaněk, Ondřej (referee)
in English Zika and Dengue viruses, which are part of Flaviridae family, are responsible for fever diseases. Infection can be asymptomatic or with symptoms of light virosis, however, it could be also life threatening. In the case of Dengue, it could progress to haemorrhagic fever. Infection by Zika is also dangerous for pregnant women because of enhanced risk of microcephaly in new-borns. These viruses are transferred by mosquitoes from Aedes family and are part of arbovirus group. Vaccination is a good tool for control of these diseases, but development of virostatics are also in progress. Inhibitors of viral proteases are important clinically approved virostatics against HIV and HCV. It is not clear, if Zika of Dengue proteases can become drug targets, however these proteases are also interesting for basic research. Flavivirus protease is located in viral polyprotein synthesized by host cells as a part of NS3 domain. This enzyme needs activation domain NS2B; mechanism of this interaction is not fully understood. On top of the protease activity, NS3 domain includes helicase, NTPase and RNA 5'-triphosphatase activity. It is not known why these enzymes coexist as one protein domain. To address these unanswered questions, it is important to prepare expression systems for kinetic, structure and...
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