Abstract
The repair of photosystem II (PSII) after photodamage is particularly sensitive to oxidative stress and inhibition of such repair is associated with the oxidation of specific cysteine residues in elongation factor G (EF-G), a key translation factor, in the cyanobacterium Synechocystis sp. PCC 6803. Expression of mutated EF-G with a target cysteine residue replaced by serine in Synechocystis resulted in the protection of PSII from photoinhibition. This protection was attributable to the enhanced repair of PSII via acceleration of the synthesis of the D1 protein, which might have been due to reduced sensitivity of protein synthesis to oxidative stress.
Original language | English |
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Pages (from-to) | 778-783 |
Number of pages | 6 |
Journal | FEBS Letters |
Volume | 586 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2012 Mar 23 |
Keywords
- Elongation factor G
- Oxidative stress
- Photoinhibition
- Photosystem II
- Protein synthesis
- Repair
ASJC Scopus subject areas
- Biophysics
- Structural Biology
- Biochemistry
- Molecular Biology
- Genetics
- Cell Biology