The substitution of the C-terminus of bax by that of bcl-xL does not affect its subcellular localization but abrogates its pro-apoptotic properties

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Abstract

The interaction of the anti-apoptotic members of the Bcl-2 family with mitochondria, through their hydrophobic C-terminus, has been proposed to play a crucial role in the execution phase of apoptosis. We report here that a substitution of the C-terminal end of pro-apoptotic bax by that of anti-apoptotic bcl-xL (baxCxL) does not modify its association with mitochondria in human and rat cells or in Saccharomyces cerevisiae. In addition, while bax sensitizes these cells to apoptotic stimuli, the construct baxCxL does not affect the apoptotic response in transfected cells. These results suggest that the C-terminus of bax plays an important role in apoptosis independently of its membrane addressing/targeting mechanism. © 2000 Federation of European Biochemical Societies.

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Oliver, L., Priault, M., Tremblais, K., LeCabellec, M. T., Meflah, K., Manon, S., & Vallette, F. M. (2000). The substitution of the C-terminus of bax by that of bcl-xL does not affect its subcellular localization but abrogates its pro-apoptotic properties. FEBS Letters, 487(2), 161–165. https://doi.org/10.1016/S0014-5793(00)02330-9

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