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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Effect of selected compounds on NMPylation of nsp9 SARS-CoV-2 catalyzed by NiRAN domain of nsp12 SARS-CoV-2
 Fedák, Michal ; Šilhán, Jan (advisor) ; Vaněk, Ondřej (referee)
SARS-CoV-2 pandemic that begun in the end of 2019 caused over 770 milion confirmed cases of infection and almost 7 milion deaths worliwide. Despite pandemic being suppressed thanks to vaccines and restriction measures, the research of new medication targeting this virus continues. One of the possible targets of SARS-CoV-2 is nonstructural protein 9 (nsp9), which is essential for virus repliation. Just recently it was revealed that this protein can covalently bind nukleoside monophosphate (NMPylation) or RNA chain of various length (RNAylation). These reactions are catalyzed by nidovirus RNA-dependent RNA polymerase (RdRp) asociated nucleotidyltransferase (NiRAN) domain of nonstuctural protein 12 (nsp12). RNAylation of nsp9 showed to be crucial step in synthesis of RNA cap. The function of NMPylation was not jet revealed, but it is believed that this modification of nsp9 could play a role in priming of RNA synthesis. Some studies have already investigated inhibition of NMPylation. In this diploma thesis recombinant nsp9 was prepared and used in NMPylation reactions. Negative effect of DMSO on nsp9 NMPylation was observed. Three compounds (saquinavir, darunavir and conivaptan) selected based on the results of in silico studies did not show ability to inhibit NMPylation of nsp9. Next, it was confirmed...
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