ArticleProceedings of the National Academy of Sciences of the United States of America2007
Identification of the special pair of photosystem II in a chlorophyll d-dominated cyanobacterium.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.
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48 citing papers in PubMed, 127 citations in OpenAlex.
- Far-red chlorophyll d clusters extend photosystem I absorption toward the red limit.Science advances · 2026Article
- Transcriptomic Remodeling of Light Harvesting and Photosystem Genes inPlants (Basel, Switzerland) · 2026Article
- Chlorophyll triplet states in thylakoid membranes of Acaryochloris marina. Evidence for a triplet state sitting on the photosystem I primary donor populated by intersystem crossing.Photosynthesis research · 2024Article
- How electron tunneling and uphill excitation energy transfer support photochemistry in Halomicronema hongdechloris.Photosynthesis research · 2024Article
- Structure of a unique PSII-Pcb tetrameric megacomplex in a chlorophyllScience advances · 2024Article
- Phycobilisomes and Phycobiliproteins in the Pigment Apparatus of Oxygenic Photosynthetics: From Cyanobacteria to Tertiary Endosymbiosis.International journal of molecular sciences · 2023Review
- Comparative Genomic Analysis of the Marine Cyanobacterium Acaryochloris marina MBIC10699 Reveals the Impact of Phycobiliprotein Reacquisition and the Diversity of Acaryochloris PlasmidsMicroorganisms · 2022Article
- Discovery of ChlorophyllMicroorganisms · 2022Article
- Effects of Light and Oxygen on Chlorophyll d Biosynthesis in a Marine Cyanobacterium Acaryochloris marinaPlants (Basel, Switzerland) · 2022Article
- Dimeric Corrole Analogs of Chlorophyll Special Pairs.Journal of the American Chemical Society · 2021Article
- Shedding Light on Primary Donors in Photosynthetic Reaction Centers.Frontiers in microbiology · 2021Review
- Far-red absorption and light-use efficiency trade-offs in chlorophyll f photosynthesis.Nature plants · 2020Article
- Far-red light acclimation in diverse oxygenic photosynthetic organisms.Photosynthesis research · 2019Review
- Hydrogen Peroxide and Superoxide Anion Radical Photoproduction in PSII Preparations at Various Modifications of the Water-Oxidizing Complex.Plants (Basel, Switzerland) · 2019Article
- Energy transfer from chlorophyll f to the trapping center in naturally occurring and engineered Photosystem I complexes.Photosynthesis research · 2019Article
- Photosynthesis supported by a chlorophyll f-dependent, entropy-driven uphill energy transfer in Halomicronema hongdechloris cells adapted to far-red light.Photosynthesis research · 2019Article
- Evolution of photosynthetic reaction centers: insights from the structure of the heliobacterial reaction center.Photosynthesis research · 2018Article
- A novel species of the marine cyanobacterium Acaryochloris with a unique pigment content and lifestyle.Scientific reports · 2018Article
- The identification of IsiA proteins binding chlorophyll d in the cyanobacterium Acaryochloris marina.Photosynthesis research · 2018Article
- The wavelength of the incident light determines the primary charge separation pathway in Photosystem II.Scientific reports · 2018Article
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Authors and funding
8 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The composition of photosystem II (PSII) in the chlorophyll (Chl) d-dominated cyanobacterium Acaryochloris marina MBIC 11017 was investigated to enhance the general understanding of the energetics of the PSII reaction center. We first purified photochemically active complexes consisting of a 47-kDa Chl protein (CP47), CP43' (PcbC), D1, D2, cytochrome b(559), PsbI, and a small polypeptide. The pigment composition per two pheophytin (Phe) a molecules was 55 +/- 7 Chl d, 3.0 +/- 0.4 Chl a, 17 +/- 3 alpha-carotene, and 1.4 +/- 0.2 plastoquinone-9. The special pair was detected by a reversible absorption change at 713 nm (P713) together with a cation radical band at 842 nm. FTIR difference spectra of the specific bands of a 3-formyl group allowed assignment of the special pair. The combined results indicate that the special pair comprises a Chl d homodimer. The primary electron acceptor was shown by photoaccumulation to be Phe a, and its potential was shifted to a higher value than that in the Chl a/Phe a system. The overall energetics of PSII in the Chl d system are adjusted to changes in the redox potentials, with P713 as the special pair using a lower light energy at 713 nm. Taking into account the reported downward shift in the potential of the special pair of photosystem I (P740) in A. marina, our findings lend support to the idea that changes in photosynthetic pigments combine with a modification of the redox potentials of electron transfer components to give rise to an energetic adjustment of the total reaction system.
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