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. 1976 Dec;73(12):4521–4525. doi: 10.1073/pnas.73.12.4521

Proline and glycine uptake by renal brushborder membrane vesicles.

P D McNamara, B Ozegović, L M Pepe, S Segal
PMCID: PMC431526  PMID: 12509

Abstract

Uptake of L-proline and glycine by rat renal brushborder membrane vesicles was seen to be osmotically sensitive, pH dependent,and occurred in the absence of proline and glycine metabolism. The uptake system for proline was Na+ gradient dependent, and exhibited a dual system for entry, Km1 = 0.067 mM and Km2 = 5.26 mM. The uptake of glycine was also Na+ gradient dependent, and exhibited a two Km system, Km1 = 0.22 mM and Km2 = 4.00 mM. Studies of proline and glycine interactions indicate a shared site which has a lower affinity and higher capacity for glycine than for proline. The high affinity glycine site and low affinity proline site do not appear to be shared.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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