Phylogenomic and structural modeling analyses of the PsbP superfamily reveal multiple small segment additions in the evolution of photosystem II-associated PsbP protein in green plants
書誌事項
- 公開日
- 2010-07
- 権利情報
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- https://www.elsevier.com/tdm/userlicense/1.0/
- DOI
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- 10.1016/j.ympev.2009.11.021
- 公開者
- Elsevier BV
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説明
PsbP is a thylakoid lumen protein involved in oxygen evolution in photosystem II (PSII) in green plants. Genomic analysis identified a number of PsbP homologs in plants, algae, and cyanobacteria. To analyze the transition of cyanobacterial PsbO/U/V complex to PsbO/P/Q complex in green plants, the evolutionary history of the PsbP superfamily was reconstructed. Phylogenetic analyses suggested that PsbP homologs be classified into eight major families (A-H), which were also characterized by specific insertion/deletion of short segments, as found by sequence alignment and homology modeling. Family A represented authentic PsbP proteins involved in oxygen evolution. The cyanobacterial PsbP and plant/algal PPL (Family H), having the simplest structure, should be considered as the root of all other families of PsbP, which subsequently gained various short, family-specific structural motifs during diversification of PsbP families. Interestingly, segments specific to Family A proteins were found arranged as a ring surrounding the modeled Arabidopsis PsbP protein. These results suggest that Family A-specific additions of short segments played a decisive role in the transition of PsbO/U/V to PsbO/P/Q complex in green plants.
収録刊行物
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- Molecular Phylogenetics and Evolution
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Molecular Phylogenetics and Evolution 56 (1), 176-186, 2010-07
Elsevier BV
