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J Cell Sci. 2003 Sep 1;116(Pt 17):3623-34. Epub 2003 Jul 22.

Pex10p links the ubiquitin conjugating enzyme Pex4p to the protein import machinery of the peroxisome.

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  • 1Ruhr-Universität Bochum, Institut für Physiologische Chemie, Medizinische Fakultät, 44780 Bochum, Germany.

Abstract

The protein import machinery of the peroxisome consists of many proteins, collectively called the peroxins. By applying the split-ubiquitin technique we systematically tested the pair-wise interactions between the Nub- and Cub-labeled peroxins for the first time in the living cells of the yeast Saccharomyces cerevisiae. We found that Pex10p plays a central role in the protein interaction network by connecting the ubiquitin conjugation enzyme Pex4p to the other members of the protein import machinery. A yeast strain harboring a deletion of PEX3 enabled us to estimate the influence of the peroxisomal membrane on the formation of a subset of the investigated protein-protein interactions.

PMID:
12876220
[PubMed - indexed for MEDLINE]
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