Metaxins 1 and 2, two proteins of the mitochondrial protein sorting and assembly machinery, are essential for Bak activation during TNF alpha triggered apoptosis.

Abstract:

:The proteins Bax and Bak are central in the execution phase of apoptosis; however, little is known about the partners involved in the control of this complex process. Here, we show that mitochondrial Bak is incorporated into a VDAC2/Mtx1/Mtx2 multi-protein complex in both resting and dying cells. VDAC2 is a porin that has previously been described as a partner of Bak while Mtx1 and Mtx2 are two proteins of the mitochondrial sorting and assembly machinery (SAM) that have been implicated in TNF-induced apoptosis. We show that, after the induction of apoptosis, Bak switches from its association with Mtx2 and VDAC2 to interact with Mtx1.

journal_name

Cell Signal

journal_title

Cellular signalling

authors

Cartron PF,Petit E,Bellot G,Oliver L,Vallette FM

doi

10.1016/j.cellsig.2014.04.021

subject

Has Abstract

pub_date

2014-09-01 00:00:00

pages

1928-34

issue

9

eissn

0898-6568

issn

1873-3913

pii

S0898-6568(14)00156-9

journal_volume

26

pub_type

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