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Träfflista för sökning "WFRF:(Sznajder R.) srt2:(2001-2004)"

Sökning: WFRF:(Sznajder R.) > (2001-2004)

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  • Bertorello, AM, et al. (författare)
  • Analysis of Na+,K+-ATPase motion and incorporation into the plasma membrane in response to G protein-coupled receptor signals in living cells
  • 2003
  • Ingår i: Molecular biology of the cell. - : American Society for Cell Biology (ASCB). - 1059-1524 .- 1939-4586. ; 14:3, s. 1149-1157
  • Tidskriftsartikel (refereegranskat)abstract
    • Dopamine (DA) increases Na+,K+-ATPase activity in lung alveolar epithelial cells. This effect is associated with an increase in Na+,K+-ATPase molecules within the plasma membrane ( Ridge et al., 2002 ). Analysis of Na+,K+-ATPase motion was performed in real-time in alveolar cells stably expressing Na+,K+-ATPase molecules carrying a fluorescent tag (green fluorescent protein) in the α-subunit. The data demonstrate a distinct (random walk) pattern of basal movement of Na+,K+-ATPase–containing vesicles in nontreated cells. DA increased the directional movement (by 3.5 fold) of the vesicles and an increase in their velocity (by 25%) that consequently promoted the incorporation of vesicles into the plasma membrane. The movement of Na+,K+-ATPase–containing vesicles and incorporation into the plasma membrane were microtubule dependent, and disruption of this network perturbed vesicle motion toward the plasma membrane and prevented the increase in the Na+,K+-ATPase activity induced by DA. Thus, recruitment of new Na+,K+-ATPase molecules into the plasma membrane appears to be a major mechanism by which dopamine increases total cell Na+,K+-ATPase activity.
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