Fusion of sulfatide-containing vesicles of phosphatidylcholine.
Eur J Biochem
; 133(1): 229-33, 1983 Jun 01.
Article
en En
| MEDLINE
| ID: mdl-6852028
ABSTRACT
Positively charged albumin is described as a 'useful tool' to induce both aggregation and fusion of phosphatidylcholine vesicles containing sulfatide. Techniques that include light-scattering, Sepharose chromatography, centrifugation, electron microscopy, trapped volume determination and scanning calorimetry demonstrate that extensive fusion occurs during aggregation when sulfatide concentrations are above 4-5 mol%. The rate of fusion increases with time for 1-2 h, then reaches a plateau. Fusion occurs extensively above the transition temperature of the phospholipid and is strongly inhibited by increasing concentration of vesicle cholesterol. The significance of both membrane fluidity and sulfatide-phospholipid organization in the fusion mechanism are discussed.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Fosfatidilcolinas
/
Sulfoglicoesfingolípidos
/
Fusión de Membrana
/
Lípidos de la Membrana
Idioma:
En
Revista:
Eur J Biochem
Año:
1983
Tipo del documento:
Article