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Biosci Biotechnol Biochem. 2006 Jan;70(1):273-5.

Ktr-mediated potassium transport, a major pathway for potassium uptake, is coupled to a proton gradient across the membrane in Synechocystis sp. PCC 6803.

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1
Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan.

Abstract

Synechocystis sp. PCC 6803 contains a Ktr system and a putative ATP-dependent Kdp system for potassium uptake. We report here that the Kdp system plays only a minor role in potassium uptake under salt and non-stress conditions, unlike the role it plays in Escherichia coli. In Synechocystis, Ktr-mediated potassium transport is dependent on the proton gradient across the membrane.

PMID:
16428848
[Indexed for MEDLINE]
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