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Alternate copies of D1 are used by cyanobacteria under different environmental conditions

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Abstract

All cyanobacteria sequenced to date have multiple psbA genes, encoding the D1 protein. Some of these psbA genes have a series of mutations that would seem to render D1 incapable of binding the Mn4CaO5 metallocluster (Murray, Photosynth Res 110(3):177–184, 2012). Nonetheless, these genes are expressed under specific environmental conditions, such as during N2 fixation in unicellular diazotrophs of the genes Cyanothece. These genes emphasize the clever way that cyanobacteria have learned to deal with a constantly changing environment.

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Acknowledgments

This work was supported by a grant from the DOE Genomics: GTL program.

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  1. Department of Biological Sciences, Purdue University, Lilly Hall of Life Sciences, West Lafayette, IN, 47907, USA

    Xiaohui Zhang & Louis A. Sherman

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  1. Xiaohui Zhang
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  2. Louis A. Sherman
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Correspondence to Louis A. Sherman.

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Zhang, X., Sherman, L.A. Alternate copies of D1 are used by cyanobacteria under different environmental conditions. Photosynth Res 114, 133–135 (2012). https://doi.org/10.1007/s11120-012-9783-0

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