title: Alternate copies of D1 are used by cyanobacteria under different environmental conditions.
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 Mn(4)CaO(5) metallocluster (Murray, Photosynth Res 110(3):177-184, 2012). Nonetheless, these genes are expressed under specific environmental conditions, such as during N(2) 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.
authors.affiliation: Department of Biological Sciences, Purdue University, Lilly Hall of Life Sciences, West Lafayette, IN 47907, USA.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Zhang
authors.forename: Louis A
authors.initials: LA
authors.lastname: Sherman
mesh_terms: D000458:Cyanobacteria / Q000378:metabolism*; D010100:Oxygen / Q000378:metabolism*; D045332:Photosystem II Protein Complex / Q000737:chemistry* / Q000378:metabolism*; D020539:Sequence Analysis, Protein
chemical_list: D045332:Photosystem II Protein Complex; D010100:Oxygen