Li X and Gould SJ (2002) PEX11 promotes peroxisome division independently of peroxisome metabolism. J Cell Biol 156(4):643-51
Abstract: The PEX11 peroxisomal membrane proteins are the only factors known to promote peroxisome division in multiple species. It has been proposed that PEX11 proteins have a direct role in peroxisomal fatty acid oxidation, and that they only affect peroxisome abundance indirectly. Here we show that PEX11 proteins are unique in their ability to promote peroxisome division, and that PEX11 overexpression promotes peroxisome division in the absence of peroxisomal metabolic activity. We also observed that mouse cells lacking PEX11beta display reduced peroxisome abundance, even in the absence of peroxisomal metabolic substrates, and that PEX11beta(-/-) mice are partially deficient in two distinct peroxisomal metabolic pathways, ether lipid synthesis and very long chain fatty acid oxidation. Based on these and other observations, we propose that PEX11 proteins act directly in peroxisome division, and that their loss has indirect effects on peroxisome metabolism.
|Status: Published||Type: Journal Article||PubMed ID: 11839773|
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