Original title: Charakterizace interakcí proteinů Cbf11 a Mga2 v poltivé kvasince
Translated title: Characterization of Cbf11 and Mga2 interactions in the fission yeast
Authors: Grulyová, Michaela ; Převorovský, Martin (advisor) ; Čáp, Michal (referee)
Document type: Master’s theses
Year: 2023
Language: eng
Abstract: [eng] [cze]
Transcription factor Cbf11 belongs to the CSL protein family. The CSL protein family is well known for its function in Notch signalling pathway, however representatives in Notch- less fission yeast were discovered. Mga2 protein is a transcription regulator of triacylglycerol and glycerophospholipid metabolism. A crosstalk between Cbf11 and Mga2 was found. Cbf11 and Mga2 share target genes, and both are required for mitotic fidelity. This thesis aims to validate and characterize relationship between these transcription regulators. We show here that protein levels of Cbf11 and Mga2 change in response to presence of the other protein, as well as in response of nitrogen source. We also determine phylogenetic distribution of Cbf11 and Mga2 among Fungi, pointing to its connection. Using proteomic analysis of mga2 and cbf11 deletion strains we found that there is an overlap between proteins up/downregulated in these strains. Together, these results acknowledge crosstalk between Cbf11 and Mga2 proteins, bringing a novel connection between CSL protein family member and a functional analogue of mammalian SREBP-1 protein Mga2. Transkripční faktor Cbf11 patří do CSL proteinové rodiny. CSL proteinová rodina je známá pro svou funkci v Notch signální dráze, avšak zástupci CSL proteinové rodiny byli objeveni i v poltivé kvasince postrádající dráhu Notch. Protein Mga2 je transkripční regulátor metabolismu triacylglycerolů a glycerofosfolipidů. Bylo nalezeno propojení mezi Cbf11 a Mga2. Cbf11 a Mga2 sdílejí cílové geny a jsou potřební pro přesnost mitózy. Tato diplomová práce se snaží validovat a charakterizovat vztah mezi těmito transkripčními regulátory. Ukazujeme zde, že hladina proteinů Cbf11 a Mga2 se mění v závislosti na přítomnosti toho druhého proteinu a také v závislosti na zdroji dusíku. Také zde uvádíme fylogenetickou distribuci Cbf11 a Mga2 v rámci říše Fungi a ukazujeme, že je zde propojení. Za použití proteomické analýzy mga2 a cbf11 delečních kmenů jsme našli překryv mezi proteiny up a downregulovanými. Dohromady tyto výsledky potvrzují crosstalk mezi proteiny Cbf11 a Mga2 a přinášejí nové spojení mezi CSL proteinovou rodinou a funkčním analogem savčího SREBP1, proteinem Mga2.
Keywords: fission yeast; lipid metabolism; protein-protein interactions; transcription factor; metabolismus lipidů; poltivá kvasinka; protein-proteinové interakce; transkripční faktor

Institution: Charles University Faculties (theses) (web)
Document availability information: Available in the Charles University Digital Repository.
Original record: http://hdl.handle.net/20.500.11956/185685

Permalink: http://www.nusl.cz/ntk/nusl-535257


The record appears in these collections:
Universities and colleges > Public universities > Charles University > Charles University Faculties (theses)
Academic theses (ETDs) > Master’s theses