D1-a New Member of Dl Protein Family in Cyanobacteria
The D1 protein of Photosystem Ⅱ (PSⅡ), encoded by the psbA genes, is an indispensable component of oxygenic photosynthesis. Due to strongly oxidative chemistry of PSⅡ water splitting, the Dl protein is prone to constant photodamage requiring its replacement, whereas most of the other PSⅡ subunits remain ordinarily undamaged. In cyanobacteria, the Dl protein is encoded by a psbA gene family, whose members are differentially expressed according to environmental cues. In the recent years many cyanobacterial genomes have been sequenced and are available on the Internet. We have constructed a database of the Dl protein sequences and run several phylogenetic studies in an effort to elucidate the structure of the psbA gene families for those species where the functional studies are missing. Also, we present data regarding the change in psbA gene family expression under environmental stress. A general classification of cyanobacterial Dl isoforms in various cyanobacterial species into D1m, Dl:l, Dl:2, and D10 forms depending on their expression pattern under acclimated growth conditions and upon stress is discussed, talcing into consideration the phototolerance of different D1 forms and the expression conditions of respective members of the psbA gene family.
D1 Photosystem Ⅱ Cyanobacteria
Ciprian Chis Abdulah Mahboob Sergey Vassilieev Adriana Bica Loredana Peca Doug Brouce Eva-Mari Aro Cosmin Ionel Sicora
Biological Research Center Jibou, Romania Biological Research Institute Cluj-Napoca,Romania Department of Biological Sciences, Brock University, St. Catharines, Ontario, Canada Biological Research Institute Cluj-Napoca,Romania Department of Biology, Plant Physiology and Molecular Biology, University of Turku, Finland
国际会议
15th International Conference on Photosynthesis(第15届国际光合作用大会)
北京
英文
358-360
2010-08-22（万方平台首次上网日期，不代表论文的发表时间）