Spontaneous vesicle formation by mixed surfactants

2007 ◽  
pp. 3-7 ◽  
Author(s):  
S. A. Safran ◽  
F. C. MacKintosh ◽  
P. A. Pincus ◽  
D. A. Andelman
Keyword(s):  
Vesicle Formation ◽  
Mixed Surfactants

Intracellular trafficking and cytoplasmic streaming under abiotic stress conditions

2019 ◽  
Vol 6 (04) ◽  
Author(s):  
JESHIMA KHAN YASIN ◽  
ANIL KUMAR SINGH
Keyword(s):  
Plasma Membrane ◽  
Abiotic Stress ◽  
Confocal Microscopy ◽  
Fusion Protein ◽  
Intracellular Trafficking ◽  
Cytoplasmic Streaming ◽  
Living Cells ◽  
Stress Conditions ◽  
Vesicle Formation ◽  
External Stimuli

Cytoplasmic streaming is one among the vital activities of the living cells. In plants cytolplasmic streaming could clearly be seen in hypocotyls of growing seedlings. To observe cytoplsmic streaming and its correlated intracellular trafficking an investigation was conducted in legumes in comparison with GFP-AtRab75 and 35S::GFP:δTIP tonoplast fusion protein expressing arabidopsis lines. These seedlings were observed under confocal microscopy with different buffer incubation treatments and under different stress conditions. GFP expressing 35S::GFP:δTIP tonoplast lines were looking similar to the control lines and differ under stress conditions. Movement of cytoplasmic invaginations within the tonoplast and cytoplasmic sub vesicle or bulb budding during cytoplasmic streaming was observed in hypocotyls of At-GFP tonoplast plants. We found the cytoplasmic bulbs/ vesicles or sub vesicle formation from the plasma membrane. The streaming speed also depends on the incubation medium in which the specimen was incubated, indicating that the external stimuli as well as internal stimuli can alter the speed of streaming

scholarly journals In Vitro Incorporation of GPI-Anchored Proteins Into Human Erythrocytes and Their Fate in the Membrane

Blood ◽  
1998 ◽  
Vol 91 (5) ◽  
pp. 1784-1792 ◽  
Author(s):  
Gianluca Civenni ◽  
Samuel T. Test ◽  
Urs Brodbeck ◽  
Peter Bütikofer
Keyword(s):  
Membrane Vesicle ◽  
Human Erythrocytes ◽  
Membrane Extraction ◽  
Membrane Microdomains ◽  
Membrane Insertion ◽  
Vesicle Formation ◽  
Calcium Loading ◽  
Lipid Moiety ◽  
Triton X

Abstract In many different cells, glycosylphosphatidylinositol (GPI)-anchored molecules are clustered in membrane microdomains that resist extraction by detergents at 4°C. In this report, we identified the presence of such domains in human erythrocytes and examined the ability of exogenously-added GPI-anchored molecules to colocalize with the endogenous GPI-anchored proteins in these detergent-insoluble complexes. We found that the addition to human erythrocytes of three purified GPI-anchored proteins having different GPI lipid moieties resulted in their efficient and correct incorporation into the membrane. The extent of membrane insertion was dependent on the intactness of the GPI lipid moiety. However, unlike the endogenous GPI-anchored proteins, the in vitro incorporated GPI molecules were not resistant to membrane extraction by Triton X-100 at 4°C. In addition, in contrast to the endogenous GPI-anchored proteins, they were not preferentially released from erythrocytes during vesiculation induced by calcium loading of the cells. These results suggest that in vitro incorporated GPI-linked molecules are excluded from pre-existing GPI-enriched membrane areas in human erythrocytes and that these microdomains may represent the sites of membrane vesicle formation.

scholarly journals Mutational analysis of caveolin-induced vesicle formation

FEBS Letters ◽  
1998 ◽  
Vol 434 (1-2) ◽  
pp. 127-134 ◽  
Author(s):  
Shengwen Li ◽  
Ferruccio Galbiati ◽  
Daniela Volonte' ◽  
Massimo Sargiacomo ◽  
Jeffrey A Engelman ◽  
...  
Keyword(s):  
Mutational Analysis ◽  
Vesicle Formation

Vesicle formation in the Golgi apparatus

1989 ◽  
Vol 141 (4) ◽  
pp. 463-504 ◽  
Author(s):  
George F. Oster ◽  
Louis Y. Cheng ◽  
Hsiao-Ping H. Moore ◽  
Alan S. Perelson
Keyword(s):  
Golgi Apparatus ◽  
Vesicle Formation

IL-25 Hermansky-Pudlak syndrome: a model for abnormal vesicle formation and trafficking

2003 ◽  
Vol 16 (5) ◽  
pp. 584-584 ◽  
Author(s):  
M. Huizing ◽  
A. Helip-Wooley ◽  
H. Dorward ◽  
D. Claassen ◽  
R. Hess ◽  
...  
Keyword(s):  
Vesicle Formation ◽  
Hermansky Pudlak Syndrome
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