Please use this identifier to cite or link to this item: https://zone.biblio.laurentian.ca/handle/10219/3744
Title: Glutamine synthetase expression and stress tolerance in Drosophila melanogaster
Authors: Daypuk, Jenna
Keywords: Glutamine synthetase;glutamine addiction;oxidative stress;heat shock;Drosophila melanogaster
Issue Date: 3-Aug-2021
Abstract: This thesis explores glutamine synthetase in Drosophila melanogaster. L-glutamine, more than other amino acids, is strictly required for cell survival. Like many complex organisms, D. melanogaster has two forms of the enzyme glutamine synthetase (GS): GS1, located in the mitochondria, and GS2, located in the cytosol. Interestingly, how these two isozymes partition GS function is unknown. I validated a sample preparation protocol to separate the mitochondria and cytosol from Drosophila samples, and assay solutions for the measurement of GS transferase and GS biosynthetic activity. I created knockdowns of GS1 and GS2 and subjected these to heat shock and paraquat-induced stress. The GS1 and GS2 knockdowns displayed differences in their response to both stressors, indicating a potential functional differentiation of the two isozymes in stress tolerance. This project is a step in the use of Drosophila to explore the GS network and how glutamine modulates cell survival.
URI: https://zone.biblio.laurentian.ca/handle/10219/3744
Appears in Collections:Chemical Sciences - Master's Theses

Files in This Item:
File Description SizeFormat 
_Jenna Daypuk Masters thesis 080621.pdf8.59 MBAdobe PDFView/Open


Items in LU|ZONE|UL are protected by copyright, with all rights reserved, unless otherwise indicated.