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Expression of Bax in yeast affects not only the mitochondria but also vacuolar integrity and intracellular protein traffic

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Bax-induced lethality in yeast is accompanied by morphological changes in mitochondria, giving rise to a reduced number of swollen tubules. Although these changes are completely abolished upon coexpression of the Bax inhibitor, Bcl-2, coexpression of Bax with Bax inhibiting-glutathione S-transferase (BI-GST) leads to aggregation, but not fusion of the mitochondria. In addition, Bax affects the integrity of yeast vacuoles, resulting in the disintegration and eventual loss of the organelles, and the disruption of intracellular protein traffic. While Bcl-2 coexpression only partially corrects this phenotype, coexpression of BI-GST fully restores the organelles, indicating a different mode of protection exerted by Bcl-2 and BI-GST.

OriginalsprogEngelsk
TidsskriftFEBS letters
Vol/bind566
Udgave nummer1-3
Sider (fra-til)100-4
Antal sider5
ISSN0014-5793
DOI
StatusUdgivet - 21 maj 2004

ID: 159085295