The pathogenic peroxin Pex26p recruits the Pex1p-Pex6p AAA ATPase complexes to peroxisomes

Naomi Matsumoto, Shigehiko Tamura, Yukio Fujiki

Research output: Contribution to journalArticle

125 Citations (Scopus)

Abstract

Peroxisomes are ubiquitous organelles with a single membrane that contain over 50 different enzymes that catalyse various metabolic pathways, including β-oxidation and lipid synthesis1. Peroxisome biogenesis disorders (PBDs), such as Zellweger syndrome and neonatal adrenoleukodystrophy, are fatal genetic diseases that are autosomal recessive2,3 . Among the PBDs of the 12 complementation groups (CGs)4, 11 associated PEX genes have been isolated4-7 . Accordingly, only the PBD pathogenic gene for CG8 (also called CG-A) remains unidentified. Here we have isolated human PEX26 encoding a type II peroxisomal membrane protein of relative molecular mass 34,000 (Mr 34K) by using ZP167 cells, a Chinese hamster ovary (CHO) mutant cell line5,8. Expression of PEX26 restores peroxisomal protein import in the fibroblasts of an individual with PBD of CG8. This individual possesses a homozygous, inactivating pathogenic point mutation, Arg98Trp, in Pex26. Pex6 and Pex1 of the AAA ATPase family co-immunoprecipitate with Pex26. Epitopetagged Pex6 and Pex1 are discernible as puncta in normal CHO-K1 cells, but not in PEX26-defective cells. PEX26 expression in ZP167 cells re-establishes colocalization of Pex6 and Pex1 with Pex26, in a Pex6-dependent manner. Thus, Pex26 recruits Pex6-Pex1 complexes to peroxisomes.

Original languageEnglish
Pages (from-to)454-460
Number of pages7
JournalNature Cell Biology
Volume5
Issue number5
DOIs
Publication statusPublished - May 1 2003

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Peroxisomes
Adenosine Triphosphatases
Cricetulus
Ovary
Zellweger Syndrome
Peroxisomal Disorders
Inborn Genetic Diseases
Metabolic Networks and Pathways
Point Mutation
Organelles
Genes
Membrane Proteins
Fibroblasts
Lipids
Membranes
Enzymes
Peroxisome biogenesis disorders
Proteins

All Science Journal Classification (ASJC) codes

  • Cell Biology

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The pathogenic peroxin Pex26p recruits the Pex1p-Pex6p AAA ATPase complexes to peroxisomes. / Matsumoto, Naomi; Tamura, Shigehiko; Fujiki, Yukio.

In: Nature Cell Biology, Vol. 5, No. 5, 01.05.2003, p. 454-460.

Research output: Contribution to journalArticle

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