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. 2009 Jan;13(1):67-79.
doi: 10.1007/s00792-008-0199-x. Epub 2008 Oct 31.

Proteomic analysis of secreted membrane vesicles of archaeal Sulfolobus species reveals the presence of endosome sorting complex components

Albert F Ellen  1 , Sonja-Verena Albers, Wim Huibers, Angela Pitcher, Cedric F V Hobel, Heinz Schwarz, Mihaela Folea, Stefan Schouten, Egbert J Boekema, Bert Poolman, Arnold J M Driessen
Affiliations

Proteomic analysis of secreted membrane vesicles of archaeal Sulfolobus species reveals the presence of endosome sorting complex components

Albert F Ellen et al. Extremophiles. 2009 Jan.

Abstract

The crenarchaea Sulfolobus acidocaldarius, S. solfataricus and S. tokodaii, release membrane vesicles into the medium. These membrane vesicles consist of tetraether lipids and are coated with an S-layer. A proteomic analysis reveals the presence of proteins homologous to subunits of the eukaryotic endosomal sorting complex required for transport (ESCRT). Immunodetection of one of these homologs suggest a cell surface localization in intact cells. These data suggest that the membrane vesicles in Sulfolobus sp. emerge from a specific budding process with similarity to the endosomal sorting pathway.

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