title: Damage to photosystem II by lipid peroxidation products.
abstract: Photosystem II proteins of higher plant chloroplasts are prone to oxidative stress, and most prominently the reaction center-binding D1 protein is damaged under abiotic stress. The reactive oxygen species produced under these stress conditions have been suggested to be responsible for the protein injury.
  
  
  
  Recently, it has been shown that the primary and secondary products of non-enzymatic and enzymatic lipid peroxidation have a capability to modify photosystem II proteins. Here, we give an overview showing how lipid peroxidation products formed under light stress and heat stress in the thylakoid membranes cause oxidative modification of proteins in higher plant photosystem II.
  
  
  
  Damage to photosystem II proteins by lipid peroxidation products represents a new mechanism underlying photoinhibition and heat inactivation.
  
  
  
  Complete characterization of photosystem II protein damage is of crucial importance because avoidance of the damage makes plants to survive under various abiotic stresses. Further physiological significance of photosystem II protein oxidation by lipid peroxidation product should have a potential relevance to plant acclimation because the oxidized proteins might serve as signaling molecules.
authors.affiliation: Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic. Electronic address: pavel.pospisil@upol.cz.
authors.forename: Pavel
authors.initials: P
authors.lastname: Pospíšil
authors.affiliation: Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan.
authors.forename: Yasusi
authors.initials: Y
authors.lastname: Yamamoto
mesh_terms: D002736:Chloroplasts / Q000378:metabolism / Q000502:physiology; D015227:Lipid Peroxidation / Q000502:physiology*; D010084:Oxidation-Reduction; D018384:Oxidative Stress / Q000502:physiology; D045332:Photosystem II Protein Complex / Q000378:metabolism / Q000502:physiology*; D010944:Plants / Q000378:metabolism; D017382:Reactive Oxygen Species / Q000378:metabolism; D013312:Stress, Physiological / Q000502:physiology
chemical_list: D045332:Photosystem II Protein Complex; D017382:Reactive Oxygen Species
keywords: Lipid peroxidation; Photosystem II; Protein oxidation; Reactive carbonyl species; Reactive oxygen species