Reference: Guscetti F, et al. (2005) Functional characterization of human proapoptotic molecules in yeast S. cerevisiae. FASEB J 19(3):464-6

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Abstract


The presence of a complete (BH1-3) proapoptotic molecule is necessary for the induction of the intrinsic apoptotic cascade in mammalian cells. It is unclear, however, what distinct roles the members of the large family of BH3-only proapoptotic molecules play in apoptosis. Although biochemical analysis of these molecules can characterize binding efficiencies of BH3 family members, the biologic consequences of these interactions are difficult to predict. We have, therefore, established three functional categories of BH3-only human proapoptotic proteins based on their toxicity after expression in budding yeast: directly killing (tBid), sensitizing in Bax/Bcl-2 expressing cells (Bad or Puma), and non-toxic (BNip3, BNip3L, and Noxa). The mechanism of killing by the proapoptotic molecules in yeast, however, is not due to activation of the recently described yeast metacaspase MCA1.

Reference Type
Journal Article | Research Support, N.I.H., Extramural | Research Support, Non-U.S. Gov't | Research Support, U.S. Gov't, P.H.S.
Authors
Guscetti F, Nath N, Denko N
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