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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Cellular factors influencing the antibiotic resistance by ABC-F proteins
 Kýr, Jan ; Balíková Novotná, Gabriela (advisor) ; Dolejšová, Tereza (referee)
Antibiotic resistance is one of the main problems modern medicine has to face. In order to control it, it is important first to understand the mechanisms by which resistant pathogens bypass antibiotic treatment. One of the important protein families conferring resistance to 50S binding antibiotics is the ARE ABC-F protein family. A member of this protein family is the MsrA protein, which confers resistance to 14- and 15-membered macrolides. Loss-of-function mutations in the non-essential chaperone ClpX were found to a significant ly enhance the action of the MsrA protein. This leads to the significant increase in the resistance conferred by this protein. The exact mechanism by which ClpX affects MsrA function is still unknown. In this the diploma thesis was demonstrated that chaperone protein ClpX affects the resistance to erythromycin conferred by MsrA protein, due to the interaction with an unknown essential protein, which is mediated by a functional N-terminal zinc-binding domain of the chaperone. Furthermore, it was demonstrated in this work that loss of GluTR function influence the MsrA ability to confer resistance. The results of this work will bet he basis for further reasearch, which will lead to a more detailed understanding of the mechanism of resistance conferred by these proteins and...
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