Interaction between anions and the reduced folate/methotrexate transport system in L1210 cell plasma membrane vesicles: Directional symmetry and anion specificity for differential mobility of loaded and unloaded carrier

1984 ◽  
Vol 79 (3) ◽  
pp. 285-292 ◽  
Author(s):  
C. H. Yang ◽  
F. M. Sirotnak ◽  
M. Dembo
Keyword(s):  
Plasma Membrane ◽  
Transport System ◽  
Membrane Vesicles ◽  
L1210 Cell ◽  
Plasma Membrane Vesicles ◽  
Cell Plasma Membrane ◽  
Differential Mobility ◽  
Cell Plasma

Two Phases Of Ferricyanide Reductase Activity In Ehrlich Cell Plasma Membranes

1992 ◽  
Vol 47 (11-12) ◽  
pp. 929-931 ◽  
Author(s):  
Antonio del Castillo-Olivares ◽  
Javier Márquez ◽  
Ignacio Núñez de Castro ◽  
Miguel Angel Medina
Keyword(s):  
Plasma Membrane ◽  
Plasma Membranes ◽  
Reductase Activity ◽  
Membrane Vesicles ◽  
Plasma Membrane Vesicles ◽  
Cell Plasma Membrane ◽  
Ferricyanide Reductase ◽  
Ehrlich Cell ◽  
Cell Plasma ◽  
Two Phases

Ehrlich cell plasma membrane vesicles have a ferricyanide reductase activity that shows two phases. These two phases were kinetically characterized. Evidence is presented for a differential effect of trypsin on both phases

scholarly journals Diamines interfere with the transport of l-ornithine in Ehrlich-cell plasma-membrane vesicles

1991 ◽  
Vol 280 (3) ◽  
pp. 825-827 ◽  
Author(s):  
M A Medina ◽  
J L Urdiales ◽  
J M Mates ◽  
I Núñez de Castro ◽  
F Sánchez-Jiménez
Keyword(s):  
Plasma Membrane ◽  
Membrane Vesicles ◽  
Plasma Membrane Vesicles ◽  
Cell Plasma Membrane ◽  
Ehrlich Cells ◽  
Ehrlich Cell ◽  
Cell Plasma ◽  
Diffusional Component

1. L-Ornithine transport by plasma-membrane vesicles isolated from Ehrlich cells is Na(+)-independent and shows a saturable and a diffusional component. 2. Putrescine, histamine, 5-hydroxytryptamine and 2,3-diaminopropane at 55 microM concentration significantly inhibit 0.5 mM-L-ornithine transport at least for the first 10 min of incubation. 3. There is a trans-stimulatory effect of putrescine on L-ornithine transport.

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