Increase in membrane fluidity and opening of tight junctions have similar effects on sodium-coupled uptakes in renal epithelial cells

Apical membranes of renal epithelial cells were shown to be more rigid than other plasma membranes, due in part to the abundance of sphingomyelin among their constituent phospholipids. Tight junctions play a key role in maintaining differences between the apical and the basolateral domains of the pl...

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