Potassium transport system of Rhodopseudomonas capsulata.

Journal of Bacteriology
P Jasper

Abstract

Rhodopseudomonas capsulata required potassium (or rubidium or cesium as analogs of potassium) for growth. These cations were actively accumulated by the cells by a process following Michaelis-Menten saturation kinetics. The monovalent cation transport system had Km's of 0.2 mM K+, 0.5 mM Rb+, and 2.6 mM Cs+. The rates of uptake of substrates by the potassium transport system varied with the age of the culture, although the affinity constant for the substrates remained constant. The maximal velocity of uptake of K+ was lower in aerobically grown cells than in photosynthetically grown cells, although the Km's for K+ and for Rb+ were about the same.

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Citations

Feb 10, 2004·Applied and Environmental Microbiology·Lawrence P WackettLynda B M Ellis
Apr 4, 2014·Biological & Pharmaceutical Bulletin·Pengyao ZhangTakuo Ogihara
Jan 1, 1986·Photosynthesis Research·D B Knaff
Aug 1, 1980·Archives of Microbiology·H G Sahl, H G Trüper
Nov 28, 2017·Environmental Science and Pollution Research International·Pitchiah SivaperumalRajendran Rajaram
Jun 1, 1982·Journal of Bacteriology·K J HellingwerfW N Konings
Apr 1, 1989·Journal of Bacteriology·D BossemeyerE P Bakker
Dec 1, 1988·Journal of Bacteriology·T AbeeW N Konings
Mar 1, 1992·Applied and Environmental Microbiology·N TomiokaO Yagi
Mar 1, 1978·Journal of Bacteriology·P Jasper, S Silver
Dec 1, 1987·Journal of Bacteriology·C J Ingham, J P Armitage

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