Interaction network of the mitochondrial outer membrane protein Mcp3
2018
Sinzel, Monika | Zeitler, Andreas | Dimmer, Kai S.
Mitochondria are organelles containing two membranes that are distinct in composition and function. A role of the mitochondrial outer membrane (MOM) is to mediate contact of the organelle with the rest of the cell. In yeast, the MOM contains about 40 different integral proteins. Recently, we described the MOM protein Mcp3, which can serve as a multicopy suppressor of loss of ERMES complex that mediates mitochondria–endoplasmic reticulum contacts. To shed further light on the role of Mcp3 in the MOM, we analyzed its physical interaction with other proteins. We show that Mcp3 interacts with the MOM protein Om45 and the inner membrane protein Aim19. Our observations hint toward a potential involvement of Mcp3 in a structural and/or functional link between both mitochondrial membranes.
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