A mutant of Synechocystis sp. strain PCC 6803 disrupted for sll1878 exhibited greatly reduced Fe(3+) transport activity. The K(m) value of sll1878-dependent Fe(3+) transport in cells grown in iron-replete medium was 0.5 microM. Both the maximal rate and K(m) value were increased in iron-starved cells.
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Katoh et al. (2000) studied this question.
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