Journal of Bioenergetics and Biomembranes

, Volume 37, Issue 3, pp 113–119

Mitochondrial Carrier Homolog 2: A Clue to Cracking the BCL-2 Family Riddle?


DOI: 10.1007/s10863-005-6222-3

Cite this article as:
Gross, A. J Bioenerg Biomembr (2005) 37: 113. doi:10.1007/s10863-005-6222-3


BCL-2 family members are pivotal regulators of the apoptotic process. Mitochondria are a major site-of-action for these proteins. Several prominent alterations occur to mitochondria during apoptosis that seem to be part of the “mitochondrial apoptotic program.” The BCL-2 family members are believed to be the major regulators of this program, however their exact mechanism of action still remains a mystery. BID, a pro-apoptotic BCL-2 family member plays an essential role in initiating this program. Recently, we have revealed that in apoptotic cells the activated/truncated form of BID, tBID, interacts with a novel, uncharacterized protein named mitochondrial carrier homolog 2 (Mtch2). Mtch2 is a conserved protein that is similar to members of the mitochondrial carrier protein (MCP) family. This review summarizes the current knowledge regarding BCL-2 family members and the mitochondrial apoptotic program and examines the possible involvement of Mtch2 in this program.


BIDmitochondrial carrier homolog 2BH3-only proteinsBCL-2family membersmitochondrial carrier proteinsmitochondriaapoptosis

Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  1. 1.Department of Biological RegulationWeizmann Institute of ScienceRehovotIsrael