ArticleGenome biology and evolution2021
The Evolution of the Cytochrome c6 Family of Photosynthetic Electron Transfer Proteins.
Article in Genome biology and evolution, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 12 citations in OpenAlex.
- Pathway(s) and distribution of photosystem II-cyclic electron flow.Biochemical Society transactions · 2026Review
- Structural proteomics reveals the functional docking interface of ferredoxin-NADPThe Plant journal : for cell and molecular biology · 2026Article
- Structure of Photosystem I-FCP from giant kelp uncovers drivers of antenna evolution across the red lineage.bioRxiv : the preprint server for biology · 2025Article
- A High-Resolution Crystallographic Study of Cytochrome c6: Structural Basis for Electron Transfer in Cyanobacterial Photosynthesis.International journal of molecular sciences · 2025Article
- Regulation of Microalgal Photosynthetic Electron Transfer.Plants (Basel, Switzerland) · 2024Review
- Phylogenetic and functional analysis of cyanobacterial CytochromeFrontiers in plant science · 2023Article
- Dietary Heme-Containing Proteins: Structures, Applications, and Challenges.Foods (Basel, Switzerland) · 2022Review
- Here comes the sun: How optimization of photosynthetic light reactions can boost crop yields.Journal of integrative plant biology · 2022Review
- Structure, Function, and Variations of the Photosystem I-Antenna Supercomplex from Different Photosynthetic Organisms.Sub-cellular biochemistry · 2022Article
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Authors and funding
4 authors at 1 institution in 1 country.
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Abstract
During photosynthesis, electrons are transferred between the cytochrome b6f complex and photosystem I. This is carried out by the protein plastocyanin in plant chloroplasts, or by either plastocyanin or cytochrome c6 in many cyanobacteria and eukaryotic algal species. There are three further cytochrome c6 homologs: cytochrome c6A in plants and green algae, and cytochromes c6B and c6C in cyanobacteria. The function of these proteins is unknown. Here, we present a comprehensive analysis of the evolutionary relationship between the members of the cytochrome c6 family in photosynthetic organisms. Our phylogenetic analyses show that cytochromes c6B and c6C are likely to be orthologs that arose from a duplication of cytochrome c6, but that there is no evidence for separate origins for cytochromes c6B and c6C. We therefore propose renaming cytochrome c6C as cytochrome c6B. We show that cytochrome c6A is likely to have arisen from cytochrome c6B rather than by an independent duplication of cytochrome c6, and present evidence for an independent origin of a protein with some of the features of cytochrome c6A in peridinin dinoflagellates. We conclude with a new comprehensive model of the evolution of the cytochrome c6 family which is an integral part of understanding the function of the enigmatic cytochrome c6 homologs.
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