Reference: Palmer LK, et al. (2009) RRD1, a component of the TORC1 signalling pathway, affects anaesthetic response in Saccharomyces cerevisiae. Yeast 26(12):655-61

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Abstract


The molecular mechanisms of action of volatile anaesthetics remain unknown despite clinical use for over 150 years. While many effects of these agents have been characterized, clear insight into how these effects relate to the physiological state of anaesthesia has not been established. Volatile anaesthetics arrest cell division in Saccharomyces cerevisiae in a manner that parallels the anaesthetic actions of these drugs in mammals. To gain additional insight into the cellular activities of these drugs, we isolated genes that, when present on multi-copy plasmids, render S. cerevisiae resistant to the volatile anaesthetic isoflurane. One of these genes, RRD1, encodes a subunit of the Tap42p-Sit4p-Rrd1p phosphatase complex that functions in the target of rapamycin complex 1 (TORC1) signalling pathway. In addition, we show that mutations in two other genes encoding components of the TORC1 pathway, GLN3 and URE2, also affect yeast anaesthetic response. These findings suggest that TORC1-mediated signalling is involved in cellular response to volatile anaesthetics in S. cerevisiae. Copyright (c) 2009 John Wiley & Sons, Ltd.

Reference Type
Journal Article
Authors
Palmer LK, Baptiste BA, Fester JC, Perkins JC, Keil RL
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