Date of Award
Bachelor of Science (BS)
College of Science
Doug Van Hoewyk
Plants that hyperaccumulate elements like selenium to potentially toxic levels may use proteasome complexes to reduce toxicity. The 26S proteasome complex may be a pathway that these plants take to rid themselves of selenium toxicity by destroying damaged proteins caused by selenium. A method to test this hypothesis is to use a hyperaccumulator of selenium Stanleya pinnata and nonhyperaccumulators Populous tremula and Arabdopsis thaliana to evaluate their proteasome abundance without and with selenium. To compare these species western blots were made to show the differences in proteasome abundance. Also to compare the amount of oxidized and an ubiquinated protein in samples without selenium versus with selenium a proteasome inhibitor MG132 was used in another set of samples. The results showed that selenium does upregulate the 26s proteasome complex in Stanleya Pinnata and Populous tremula but not in Arabdopsis thaliana.
Sabbagh, Melissa, "The Involvement of 26S Proteasome Complex in Selenium Toxicity" (2011). Honors Theses. 112.