Photoinhibition of Photosystem II. Inactivation, protein damage and turnover.

@article{citeulike:240958, abstract = {Even though light is the source of energy for photosynthesis, it can also be harmful to plants. Light-induced damage is targetted mainly to Photosystem II and leads to inactivation of electron transport and subsequent oxidative damage of the reaction centre, in particular to the D1 protein. Inactivation and protein damage can be induced by two different mechanisms, either from the acceptor side or from donor side of P680. The damaged D1 protein is triggered for degradation and digested by at least one serine-type proteinase that is tightly associated with the Photosystem II complex itself. The damaged Photosystem II complex dissociates from the light-harvesting antenna and migrates from appressed to non-appressed thylakoid regions where a new D1 protein is co-translationally inserted into the partially disassembled Photosystem II complex. D1 protein phosphorylation probably allows for coordinated biodegradation and biosynthesis of the D1 protein. After religation of cofactors and assembly of subunits, the repaired Photosystem II complex can again be found in the appressed membrane regions. Various protective mechanisms and an efficient repair cycle of Photosystem II allow plants to survive light stress.}, address = {Department of Biology, University of Turku, Finland.}, author = {Aro, E. M. and Virgin, I. and Andersson, B. }, citeulike-article-id = {240958}, issn = {0006-3002}, journal = {Biochim Biophys Acta}, keywords = {d1, psii}, month = {July}, number = {2}, pages = {113--134}, posted-at = {2005-06-30 15:25:07}, priority = {5}, title = {Photoinhibition of Photosystem II. Inactivation, protein damage and turnover.}, url = {http://view.ncbi.nlm.nih.gov/pubmed/8318516}, volume = {1143}, year = {1993} }

TY - JOUR ID - citeulike:240958 L3 - citeulike-article-id:240958 TI - Photoinhibition of Photosystem II. Inactivation, protein damage and turnover. JF - Biochim Biophys Acta VL - 1143 IS - 2 SP - 113 EP - 134 AD - Department of Biology, University of Turku, Finland. SN - 0006-3002 N2 - Even though light is the source of energy for photosynthesis, it can also be harmful to plants. Light-induced damage is targetted mainly to Photosystem II and leads to inactivation of electron transport and subsequent oxidative damage of the reaction centre, in particular to the D1 protein. Inactivation and protein damage can be induced by two different mechanisms, either from the acceptor side or from donor side of P680. The damaged D1 protein is triggered for degradation and digested by at least one serine-type proteinase that is tightly associated with the Photosystem II complex itself. The damaged Photosystem II complex dissociates from the light-harvesting antenna and migrates from appressed to non-appressed thylakoid regions where a new D1 protein is co-translationally inserted into the partially disassembled Photosystem II complex. D1 protein phosphorylation probably allows for coordinated biodegradation and biosynthesis of the D1 protein. After religation of cofactors and assembly of subunits, the repaired Photosystem II complex can again be found in the appressed membrane regions. Various protective mechanisms and an efficient repair cycle of Photosystem II allow plants to survive light stress. KW - d1 KW - psii AU - Aro, EM AU - Virgin, I AU - Andersson, B PY - 1993/07/05/ UR - http://view.ncbi.nlm.nih.gov/pubmed/8318516 ER -