Abstract
Open reading frame ssr2016 encodes a protein with substantial sequence similarities to PGR5 identified as a component of the antimycin A-sensitive ferredoxin:plastoquinone reductase (FQR) in PSI cyclic photophosphorylation in Arabidopsis thaliana. We studied cyclic electron flow in Synechocystis sp. PCC 6803 in vivo in ssr2016 deletion mutants generated either in a wild-type background or in a ndhB deletion mutant. Our results indicate that ssr2016 is required for FQR and that it operates in a parallel pathway to the NDH1 complex. The ssr2016 deletion mutants are high light sensitive, suggesting that FQR might be important in controlling redox poise under adverse conditions.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1433-1436 |
| Number of pages | 4 |
| Journal | Plant and Cell Physiology |
| Volume | 46 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 1 2005 |
Keywords
- Antimycin A
- Ferredoxin quinone reductase
- Photosystem I cyclic electron transport
- Synechocystis sp. PCC 6803
- ssr2016
ASJC Scopus subject areas
- Physiology
- Plant Science
- Cell Biology
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Yeremenko, N., Jeanjean, R., Prommeenate, P., Krasikov, V., Nixon, P. J., Vermaas, W., Havaux, M., & Matthijs, H. C. P. (2005). Open reading frame ssr2016 is required for antimycin A-sensitive photosystem I-driven cyclic electron flow in the cyanobacterium Synechocystis sp. PCC 6803. Plant and Cell Physiology, 46(8), 1433-1436. https://doi.org/10.1093/pcp/pci147