Detergent-resistant membranes (DRMs) represent specialized membrane domains resistant to detergent extraction, which may serve to segregate proteins in a specific environment in order to improve their function. Segregation of glycosylphos-phatidylinositol-anchored proteins (GPI-APs) in DRMs has been shown to be involved in their sorting to the apical membrane in polarized epithelial cells. Nonetheless, we have shown that both apical and basolateral GPI-APs associate with DRMs. In this report we investigated the lipid composition of DRMs associated with an apical and a basolateral GPI-AP. We found that apical and basolateral DRMs contain the same lipid species although in different ratios. This specific lipid ratio is maintained after mixing the cells before lysis indicating that DRMs maintain their identity after Triton extraction.
Analysis of detergent-resistant membranes associated with apical and basolateral GPI-anchored proteins in polarized epithelial cells / S. Tivodar, S. Paladino, R. Pillich, A. Prinetti, V. Chigorno, G. van Meer, S. Sonnino, C. Zurzolo. - In: FEBS LETTERS. - ISSN 0014-5793. - 580:24(2006 Oct 16), pp. 5705-5712.
|Titolo:||Analysis of detergent-resistant membranes associated with apical and basolateral GPI-anchored proteins in polarized epithelial cells|
SONNINO, SANDRO (Penultimo)
|Parole Chiave:||Detergent-resistant membranes; Epithelial cells; Glycosylphosphatidylinositol-anchored proteins; Polarity; Rafts; Sorting|
|Settore Scientifico Disciplinare:||Settore BIO/10 - Biochimica|
Settore BIO/12 - Biochimica Clinica e Biologia Molecolare Clinica
|Data di pubblicazione:||16-ott-2006|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.febslet.2006.09.022|
|Appare nelle tipologie:||01 - Articolo su periodico|