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Reference: Insenser M, et al. (2006) Proteomic analysis of detergent-resistant membranes from Candida albicans. Proteomics 6 Suppl 1:S74-81

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Abstract

Lipid rafts are membrane microdomains with a higher amount of saturated fatty acids and sterols than the rest of the membrane. They are more resistant to the action of non-anionic detergents, and are called, for this reason, detergent-resistant membranes (DRMs). Lipid rafts are involved in many cellular processes, like signaling, cytokinesis, response to environment, etc., and therefore must contain important proteins. We have obtained a fraction enriched in proteins from Candida albicans DRMs. The sample has been analyzed by SDS-PAGE and 29 proteins have been identified including markers for lipid rafts in Saccharomyces cerevisiae, like Pma1p and a glycosylphosphatidylinositol (GPI)-anchored protein belonging to the Phr family. Ecm33p, a GPI-anchored protein involved in cell wall biogenesis, has been found for the first time in lipid rafts. We have also identified proteins implicated in protein glycosylation, like the mannosyltransferases Mnn7p, Pmt2p and Mnt1p; proteins involved in lipid metabolism, like Erg11p and Scs7p; and heat shock proteins, like Ssa1p and Hsp90p. Most of the proteins identified are located in plasma, mitochondrial, Golgi or ER membranes, supporting the postulated existence of lipid-raft domains in all the membranes.

Reference Type
Journal Article
Authors
Insenser M, Nombela C, Molero G, Gil C
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