| Autor: |
Pramanik, Alauddin M., Bingsmark, Sophie, Lindahl, Marika, Baltscheffsky, Herrick, Baltscheffsky, Margareta, Andersson, Bertil |
| Předmět: |
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| Zdroj: |
European Journal of Biochemistry; 5/23/91, Vol. 198 Issue 1, p183-186, 4p |
| Abstrakt: |
It has been shown for the first time that several photosystem-II thylakoid proteins and the main chlorophylla/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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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