Carrier-mediated transport of glycyl-L-proline in renal brush border vesicles

Add time:08/06/2019    Source:sciencedirect.com

Renal brush border vesicles prepared from rabbit were shown to transport intact glycyl-L-proline into the intravesicular space by a Na+-independent, carrier-mediated process. The kinetics of hydrolysis of glycyl-L-proline by the vesicles showed that this dipeptide was extremely resistant to hydrolysis. The intravesicular concentration of glycyl-L-proline was the same in both NaCl and KCl media. Dipeptide uptake into the vesicles appeared to be via carrier-mediated transport down a concentration gradient.

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