Inorganic-pyrophosphate-dependent phosphorylation of spinach thylakoid proteins
| Autor: | Marika Lindahl, Bertil Andersson, Sophie Bingsmark, Margareta Baltscheffsky, Alauddin Pramanik, Herrick Baltscheffsky |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Photosystem II
Photosynthetic Reaction Center Complex Proteins Light-Harvesting Protein Complexes Plastoquinone macromolecular substances Biology environment and public health Biochemistry Pyrophosphate chemistry.chemical_compound Adenosine Triphosphate Benzoquinones Protein phosphorylation Kinase activity Phosphorylation food and beverages Membrane Proteins Photosystem II Protein Complex Plants Electron transport chain Diphosphates Proton-Translocating ATPases chemistry Thylakoid Diuron Methylphenazonium Methosulfate Electrophoresis Polyacrylamide Gel Protein Kinases |
| Zdroj: | European journal of biochemistry. 198(1) |
| ISSN: | 0014-2956 |
| Popis: | It has been shown for the first time that several photosystem-II thylakoid proteins and the main chlorophyll-a/b light-harvesting complex can be phosphorylated with inorganic pyrophosphate as phosphate donor. With pyrophosphate, as with ATP, the protein-kinase reaction is dependent on light or a strong reducing agent. The reaction which can be demonstrated in well-washed spinach thylakoids is dependent on electron transport and is controlled by the redox state of the plastoquinone pool. It is suggested that the pyrophosphate-dependent thylakoid protein phosphorylation is mediated by the same kinase which is responsible for the ATP-dependent protein phosphorylation. This pyrophosphate-dependent kinase activity may be derived from an evolutionary precursor from which ATP-dependent protein phosphorylation also developed. |
| Databáze: | OpenAIRE |
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