Use this URL to cite or link to this record in EThOS: | https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.798013 |
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Title: | The role of PQM-1 in proteostasis and transcellular chaperone signalling | ||||||
Author: | O'Brien, Daniel Thomas |
ISNI:
0000 0004 8506 108X
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Awarding Body: | University of Leeds | ||||||
Current Institution: | University of Leeds | ||||||
Date of Award: | 2019 | ||||||
Availability of Full Text: |
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Abstract: | |||||||
C. elegans are free living nematodes which are well placed as a model organism for the heat shock response. I have investigated the zinc finger transcription factor PQM-1 to discern its function in both acute heat stresses and long term suppression of aggregation prone proteins. I found that PQM-1 is required for C. elegans heat stress survival and that its presence helps suppress the aggregation of polyglutamine rich proteins. I followed this result up with an appraisal of the transcriptome of C. elegans during heat stress, in the presence and absence of pqm-1 to ascertain which genes were regulated by PQM-1 during heat stress. I also investigated the localisation and regulation of PQM-1 in heat stress conditions and found that the abundance of the protein and its subcellular localisation is influenced by both the ubiquitin ligase uba-1, and the kinase sgk-1. As a result of my studies I have discovered a novel role for PQM-1 in the heat shock response, and that it is required for proteostasis maintenance as the organism ages. Furthermore, I have also determined that a specific transcriptional programme is regulated by PQM-1 post-heat stress and identified several proteins that PQM-1 interacts with under these conditions.
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Supervisor: | van Oosten-Hawle, Patricija ; Westhead, David | Sponsor: | Not available | ||||
Qualification Name: | Thesis (Ph.D.) | Qualification Level: | Doctoral | ||||
EThOS ID: | uk.bl.ethos.798013 | DOI: | Not available | ||||
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