ArticleMethods in molecular biology (Clifton, N.J.)2025
Use of the D4H Probe to Track Sterols in Yeast.
Article in Methods in molecular biology (Clifton, N.J.), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
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5 authors.
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Abstract
Cholesterol is a fundamental component of cellular membranes, and its organization, distribution, and recycling are tightly regulated. Cholesterol can form, together with other lipids and proteins, membrane nanodomains, which play important roles in membrane trafficking, the spatiotemporal organization of signal transduction, or the modulation of plasma membrane transporters, among others. Not surprisingly then, the misregulation of cholesterol biosynthetic and transport pathways has been related to numerous diseases, including neurodegenerative and metabolic disorders. Here, we focus on the cholesterol-binding domain 4 (D4) of perfringolysin O (PFO, theta toxin) and its use as a probe to define the dynamics and subcellular localization of yeast sterols using time-lapse live-cell fluorescence microscopy. In combination with drugs that acutely interfere with sterol synthesis, such as terbinafine, the probe can also be used to monitor in real-time the extraction of sterols from specialized endoplasmic reticulum subdomains named ERSES (endoplasmic reticulum sterol exit sites) by the OSBP-related protein Osh2.
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