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Home    Μελέτη στον οργανισμό Saccharomyces cerevisiae: Α) πιθανής πρόσδεσης παραλόγων πρωτεΐνών Ynl032w, Ynl056w και Υnl099 σε περιοχές κινητοχώρων Β) πιθανής αλληλεπίδρασης πρωτεΐνης ελέγχου Rad9 με υποκινητές CTR1, FRE1 και FRE2 Γ) μεταγραφικού προτύπου έκφρασης γονιδίων με DNA μικροσυστοιχίες σε στελέχη rad9Δ και σε στελέχη όπου η Rad9 υπερεκφράζεται.  

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Identifier uch.biology.msc//2006andreadis
Title Μελέτη στον οργανισμό Saccharomyces cerevisiae: Α) πιθανής πρόσδεσης παραλόγων πρωτεΐνών Ynl032w, Ynl056w και Υnl099 σε περιοχές κινητοχώρων Β) πιθανής αλληλεπίδρασης πρωτεΐνης ελέγχου Rad9 με υποκινητές CTR1, FRE1 και FRE2 Γ) μεταγραφικού προτύπου έκφρασης γονιδίων με DNA μικροσυστοιχίες σε στελέχη rad9Δ και σε στελέχη όπου η Rad9 υπερεκφράζεται.
Author Ανδρεάδης, Χρήστος
Abstract In the present work 3 subjects were studied in the organism Saccharomyces cerevisiae: a) the possible localization of the Ynl032w, Ynl056w, Ynl099c and Spl2 proteins in the regions of kinetochores, b) the likely localization of the checkpoint protein Rad9 on the promoters of CTR1, FRE1 and FRE2 genes under specific growth conditions in wild type strains and in strains where the Aft1 transcription factor is absent and c) the study of the transcriptional profile of yeast genes in rad9Δ strains and in strains where Rad9 is overexpressed in normal growth conditions and upon BCS (copper starvation) / Η2Ο2 respectively, using yeast DNA microarrays. Concerning the first subject it was found that the paralog proteins Ynl032w, Ynl056w and Ynl099c do not bind to kinetochore chromatin under the conditions used. As concerns the second subject, Rad9 protein was found to bind on the promoters of CTR1 and FRE1 genes but not FRE2. Aft1 seems to play a role in Rad9 localization on the CTR1 promoter, as when it is absent upon iron starvation, Rad9 localization falls down several times. The DNA microarray experiments showed that Rad9 protein influences the transcription of other genes and, in particular, affects considerably the transcription of genes that are related to the regulation of copper and iron homeostasis.
Language Greek
Issue date 2006-11-09
Collection   School/Department--School of Sciences and Engineering--Department of Biology--Post-graduate theses
  Type of Work--Post-graduate theses
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