Evidence for energy-dependent copper efflux as a mechanism of Cu2+ resistance in the cyanobacterium Nostoc calcicola
Open Access
- 1 December 1991
- journal article
- Published by Oxford University Press (OUP) in FEMS Microbiology Letters
- Vol. 84 (3) , 291-294
- https://doi.org/10.1016/0378-1097(91)90371-g
Abstract
Wild-type Nostoc calcicola carried out oxygenic photosynthesis extremely sensitive to copper. A Cu2+-resistant mutant (Cu-R1) of the cyanobacterium grew normally at high concentrations of Cu2+. Its ability to grow under such conditions was found to be due to mutational acquisition of an energy-dependent efficient system of Cu2+-efflux, which rendered Cu2+-inhibited oxygenic photosynthesis fully reversible.Keywords
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