Polyamines are essential poly-cations with vital functions in all cellular systems. Their levels are controlled by intricate regulatory feedback mechanisms. Abnormally high levels of polyamines have been linked to cancer. A rate-limiting enzyme in the biosynthesis of polyamines in fungi and higher eukaryotes is ornithinedecarboxylase (ODC). Its levels are largely controlled posttranslationally via ubiquitin-independent degradation mediated by ODC antizyme (OAZ). The latter is a critical polyamine sensor in a feedback control mechanism that adjusts cellular polyamine levels. Here, we describe an approach employing quantitative western blot analyses that provides in vivo evidence for cotranslational polyamine-sensing by nascent OAZ in yeast. In addition, we describe an in vitro method to detect polyamine binding by antizyme.
CITATION STYLE
Palanimurugan, R., Gödderz, D., Kurian, L., & Dohmen, R. J. (2018). Analysis of cotranslational polyamine sensing during decoding of ODC antizyme mRNA. In Methods in Molecular Biology (Vol. 1694, pp. 309–323). Humana Press Inc. https://doi.org/10.1007/978-1-4939-7398-9_26
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