Reference: Ishikawa D, et al. (2004) Two novel proteins in the mitochondrial outer membrane mediate beta-barrel protein assembly. J Cell Biol 166(5):621-7

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Abstract


Mitochondrial outer and inner membranes contain translocators that achieve protein translocation across and/or insertion into the membranes. Recent evidence has shown that mitochondrial beta-barrel protein assembly in the outer membrane requires specific translocator proteins in addition to the components of the general translocator complex in the outer membrane, the TOM40 complex. Here we report two novel mitochondrial outer membrane proteins in yeast, Tom13 and Tom38/Sam35, that mediate assembly of mitochondrial beta-barrel proteins, Tom40, and/or porin in the outer membrane. Depletion of Tom13 or Tom38/Sam35 affects assembly pathways of the beta-barrel proteins differently, suggesting that they mediate different steps of the complex assembly processes of beta-barrel proteins in the outer membrane.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't
Authors
Ishikawa D, Yamamoto H, Tamura Y, Moritoh K, Endo T
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