Pex11-related Proteins in Peroxisome Dynamics: A Role for the Novel Peroxin Pex27p in Controlling Peroxisome Size and Number inSaccharomyces cerevisiae
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چکیده
منابع مشابه
The peroxin Pex34p functions with the Pex11 family of peroxisomal divisional proteins to regulate the peroxisome population in yeast
Peroxisomes are ubiquitous organelles involved in diverse metabolic processes, most notably the metabolism of lipids and the detoxification of reactive oxygen species. Peroxisomes are highly dynamic and change in size and number in response to both intra- and extracellular cues. In the yeast Saccharomyces cerevisiae, peroxisome growth and division are controlled by both the differential import ...
متن کاملAn ancestral role in peroxisome assembly is retained by the divisional peroxin Pex11 in the yeast Yarrowia lipolytica.
The peroxin Pex11 has a recognized role in peroxisome division. Pex11p remodels and elongates peroxisomal membranes prior to the recruitment of dynamin-related GTPases that act in membrane scission to divide peroxisomes. We performed a comprehensive comparative genomics survey to understand the significance of the evolution of the Pex11 protein family in yeast and other eukaryotes. Pex11p is hi...
متن کاملPEX11 promotes peroxisome division independently of peroxisome metabolism
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...
متن کاملMembrane curvature during peroxisome fission requires Pex11
Pex11 is a key player in peroxisome proliferation, but the molecular mechanisms of its function are still unknown. Here, we show that Pex11 contains a conserved sequence at the N-terminus that can adopt the structure of an amphipathic helix. Using Penicillium chrysogenum Pex11, we show that this amphipathic helix, termed Pex11-Amph, associates with liposomes in vitro. This interaction is especi...
متن کاملConserved function of pex11p and the novel pex25p and pex27p in peroxisome biogenesis.
We describe the isolation and characterization of a homologous pair of proteins, Pex25p (YPL112c) and Pex27p (YOR193w), whose C-termini are similar to the entire Pex11p. All three proteins localize to the peroxisomal membrane and are likely to form homo-oligomers. Deletion of any of the three genes resulted in enlarged peroxisomes as revealed by fluorescence and electron microscopy. The partial...
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ژورنال
عنوان ژورنال: Molecular Biology of the Cell
سال: 2003
ISSN: 1059-1524,1939-4586
DOI: 10.1091/mbc.e03-03-0150