
doi: 10.25365/thesis.4532
Hfq, ein Sm-like Protein von Escherichia coli hat vielfache Funktionen in zellulären Prozessen.Es ist bekannt, dass Hfq mit Komponenten des Ribosoms, des Degradosoms und anderen zellulären Maschinen, die im RNA Metabolismus involviert sind, assoziiert ist.Das Ziel dieser Studie war zu ergründen, ob Hfq direkt mit den vermeintlichen Partnern S1 und der DEAD-box Helikase CsdA interagiert. Es konnte gezeigt werden, dass Hfq indirekt mit dem ribosomalen Protein S1 und CsdA interagiert und dass diese Interaktionen mit hoher Wahrscheinlichkeit durch RNA mediiert sind. Es konnte weiters gezeigt werden, dass der C-terminale Teil von CsdA für die indirekte Assoziation mit Hfq notwendig ist.
Hfq, a Sm-like protein of Escherichia coli has many essential and overlapping functions in cellular processes. Hfq was found to be associated with components of the ribosome, degradosome and other cellular machines that are involved in RNA metabolism. The major aim of this study was to determine whether Hfq interacts physically with candidate protein partners, like ribosomal protein S1 and the DEAD-box helicase CsdA. This study revealed that the interaction between S1, CsdA and Hfq is indirect and probably mediated by RNA. Moreover the C-terminal part of CsdA is necessary for indirect association with Hfq.
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