title: Ktr-mediated potassium transport, a major pathway for potassium uptake, is coupled to a proton gradient across the membrane in Synechocystis sp. PCC 6803.
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.
authors.affiliation: Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan.
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Matsuda
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Uozumi
mesh_terms: D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism*; D027682:Cation Transport Proteins / Q000235:genetics / Q000378:metabolism*; D002462:Cell Membrane / Q000378:metabolism*; D011188:Potassium / Q000378:metabolism*; D011522:Protons; D046939:Synechocystis / Q000145:classification / Q000166:cytology* / Q000235:genetics / Q000378:metabolism*
chemical_list: D001426:Bacterial Proteins; D027682:Cation Transport Proteins; D011522:Protons; D011188:Potassium