Guanidinium derivatives act as high affinity antagonists of Na+ ions in occlusion sites of Na+,K(+)-ATPase.

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Guanidinium derivatives act as high affinity antagonists of Na+ ions in occlusion sites of Na+,K(+)-ATPase.

We have screened various alkyl- and arylguanidinium derivatives as possible competitors of Na+ or Rb+ for the cation sites on renal Na+,K(+)-ATPase. Alkyl-monoguanidinium or alkylbisguanidinium (BisG) compounds (chain lengths of C3 to C10) competitively inhibit the occlusion of Rb+ and Na+ with an order of affinities C10 greater than C8 greater than C6 greater than C4 greater than C3. BisG comp...

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ژورنال

عنوان ژورنال: Journal of Biological Chemistry

سال: 1992

ISSN: 0021-9258

DOI: 10.1016/s0021-9258(18)48407-4