ArticlePhotosynthesis research2000
The IdiA protein of Synechococcus sp. PCC 7942 functions in protecting the acceptor side of Photosystem II under oxidative stress.
Article in Photosynthesis research, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- A redox switch allows binding of Fe(II) and Fe(III) ions in the cyanobacterial iron-binding protein FutA fromProceedings of the National Academy of Sciences of the United States of America · 2024Article
- Effect of heavy metals on protein content of marine unicellular green alga Dunaliella tertiolecta.Environmental monitoring and assessment · 2021Article
- Regulation and Functional Complexity of the Chlorophyll-Binding Protein IsiA.Frontiers in microbiology · 2021Review
- Structural and functional characterization of IdiA/FutA (Tery_3377), an iron-binding protein from the ocean diazotrophThe Journal of biological chemistry · 2018Article
- Iron utilization in marine cyanobacteria and eukaryotic algae.Frontiers in microbiology · 2012Article
- Identification of components associated with thermal acclimation of photosystem II in Synechocystis sp. PCC6803.PloS one · 2010Article
- Transcript profiling reveals new insights into the acclimation of the mesophilic fresh-water cyanobacterium Synechococcus elongatus PCC 7942 to iron starvation.Plant physiology · 2008Article
- Characterization of the putative iron sulfur protein IdiC (ORF5) in Synechococcus elongatus PCC 7942.Photosynthesis research · 2007Article
- A Synechococcus elongatus PCC 7942 mutant with a higher tolerance toward the herbicide bentazone also confers resistance to sodium chloride stress.Photosynthesis research · 2007Article
- Adaptation to iron deficiency: a comparison between the cyanobacterium Synechococcus elongatus PCC 7942 wild-type and a DpsA-free mutant.Photosynthesis research · 2003Article
- A Synechococcus sp. PCC 7942 mutant with a higher tolerance towards bentazone.Photosynthesis research · 2003Article
- Unusual regulatory elements for iron deficiency induction of the idiA gene of Synechococcus elongatus PCC 7942.Journal of bacteriology · 2001Article
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Synechococcus sp. strains PCC 7942 and PCC 6301 contain a 35 kDa protein called IdiA (Iron deficiency induced protein A) that is expressed in elevated amounts under Fe deficiency and to a smaller extent also under Mn deficiency. Absence of this protein was shown to mainly damage Photosystem II. To decide whether IdiA has a function in optimizing and/or protecting preferentially either the donor or acceptor side reaction of Photosystem II, a comparative analysis was performed of Synechococcus sp. PCC 7942 wild-type, the IdiA-free mutant, the previously constructed PsbO-free Synechococcus PCC 7942 mutant and a newly constructed Synechococcus PCC 7942 double mutant lacking both PsbO and IdiA. Measurements of the chlorophyll fluorescence and determinations of Photosystem II activity using a variety of electron acceptors gave evidence that IdiA has its main function in protecting the acceptor side of Photosystem II. Especially, the use of dichlorobenzoquinone, preferentially accepting electrons from Q(A), gave a decreased O(2) evolving activity in the IdiA-free mutant. Investigations of the influence of hydrogen peroxide treatment on cells revealed that this treatment caused a significantly higher damage of Photosystem II in the IdiA-free mutant than in wild-type. These results suggest that although the IdiA protein is not absolutely required for Photosystem II activity in Synechococcus PCC 7942, it does play an important role in protecting the acceptor side against oxidative damage.
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