In Saccharomyces cerevisiae, Nce102 encodes a 173 amino acid transmembrane protein, which acts as a key player in eisosome assembly and plasma membrane organization. Here, we describe the characterization of Nce102 homologue in the human pathogen, Aspergillus fumigatus. Our results demonstrated that AfuNce102 is continuously expressed during fungal growth. In addition, microscopic examination of an AfuNce102-GFP-expressing transformant confirmed the localization of the fusion protein to the endoplasmic reticulum with higher density fluorescence at the tip of the mycelium. During conidiogenesis, the protein was localized to the conidiophores and the conidia. Abnormal conidiation of AfuNce102 deletion mutant suggests a potential role for AfuNce102 in sporulation process.
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Plasma Membrane Protein Nce102 Modulates Morphology and Function of the Yeast Vacuole.
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Department of Functional Organization of Biomembranes, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, 14220 Prague, Czech Republic.
Membrane proteins are targeted not only to specific membranes in the cell architecture, but also to distinct lateral microdomains within individual membranes to properly execute their biological functions. Yeast tetraspan protein Nce102 has been shown to migrate between such microdomains within the plasma membrane in response to an acute drop in sphingolipid levels. Combining microscopy and biochemistry methods, we show that upon gradual ageing of a yeast culture, when sphingolipid demand increases, Nce102 migrates from the plasma membrane to the vacuole.
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Sci Rep
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Institute of Biosciences and Applications, Microbial Molecular Genetics Laboratory, National Center for Scientific Research, Demokritos (NCSRD), Athens, Greece.
The plasma membrane is implicated in a variety of functions, whose coordination necessitates highly dynamic organization of its constituents into domains of distinct protein and lipid composition. Eisosomes, at least partially, mediate this lateral plasma membrane compartmentalization. In this work, we show that the Nce102 homologue of Aspergillus nidulans colocalizes with eisosomes and plays a crucial role in density/number of PilA/SurG foci in the head of germlings.
View Article and Find Full Text PDFNCE102 homologue in Aspergillus fumigatus is required for normal sporulation, not hyphal growth or pathogenesis.
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In Saccharomyces cerevisiae, Nce102 encodes a 173 amino acid transmembrane protein, which acts as a key player in eisosome assembly and plasma membrane organization. Here, we describe the characterization of Nce102 homologue in the human pathogen, Aspergillus fumigatus. Our results demonstrated that AfuNce102 is continuously expressed during fungal growth.
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Biozentrum, University of Basel, Klingelbergstraße 50-70, CH 4056 Basel, Switzerland.
One hallmark of the rapid expansion of the polar surface of fungal hyphae is the spatial separation of regions of exocytosis and endocytosis at hyphal tips, as recently shown for Ashbya gossypii and Aspergillus nidulans. To determine where cortex-associated eisosomes form with respect to these two regions, we monitored fluorescently marked eisosomes in A. gossypii.
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