Early emergence of the FtsH proteases involved in photosystem II repair

Shao, Shengxi; Cardona, Tanai; Nixon, Peter J.

doi:10.1007/s11099-018-0769-9

Cited by 26 publications

(35 citation statements)

References 116 publications

(147 reference statements)

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“…The preserved sequence and structural identity at the N-terminus of both D1 and D2 suggests that the evolution of enhanced repair mechanisms had started to evolve before the duplication. Consistent with this, the evolution of all bacterial FtsH proteases confirms that the lineage of proteases specifically dedicated to the repair of PSII makes a monophyletic and deepbranching clade (Shao, Cardona, & Nixon, 2018). As is the case for the evolution of reaction center proteins, this deep-branching clade of PSII-FtsH proteases appeared to have diverged before the radiation of those found in all the other groups of phototrophs (Shao et al, 2018).…”

Section: The N-terminus Itself (Figure 7c)supporting

confidence: 70%

Early Archean origin of Photosystem II

et al. 2018

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Photosystem II is a photochemical reaction center that catalyzes the light‐driven oxidation of water to molecular oxygen. Water oxidation is the distinctive photochemical reaction that permitted the evolution of oxygenic photosynthesis and the eventual rise of eukaryotes. At what point during the history of life an ancestral photosystem evolved the capacity to oxidize water still remains unknown. Here, we study the evolution of the core reaction center proteins of Photosystem II using sequence and structural comparisons in combination with Bayesian relaxed molecular clocks. Our results indicate that a homodimeric photosystem with sufficient oxidizing power to split water had already appeared in the early Archean about a billion years before the most recent common ancestor of all described Cyanobacteria capable of oxygenic photosynthesis, and well before the diversification of some of the known groups of anoxygenic photosynthetic bacteria. Based on a structural and functional rationale, we hypothesize that this early Archean photosystem was capable of water oxidation to oxygen and had already evolved protection mechanisms against the formation of reactive oxygen species. This would place primordial forms of oxygenic photosynthesis at a very early stage in the evolutionary history of life.

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Section: The N-terminus Itself (Figure 7c)supporting

confidence: 70%

Early Archean origin of Photosystem II

et al. 2018

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“…The preserved sequence and structural identity at the N-terminus of both D1 and D2 suggests that the evolution of enhanced repair mechanisms had started to evolve before the duplication. Consistent with this, the evolution of all bacterial FtsH proteases confirms that the lineage of proteases specifically dedicated to the repair of PSII make a monophyletic and deep-branching clade (Shao et al, 2018). As it is the case for the evolution of reaction center proteins, this deep-branching clade of PSII-FtsH proteases appeared to have diverged before the radiation of those found in all groups of phototrophs (Shao et al, 2018).…”

Section: Was There Water Oxidation Before D1 and D2?supporting

confidence: 68%

Early Archean origin of Photosystem II

Cardona

Sánchez‐Baracaldo

Rutherford

et al. 2017

Preprint

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Photosystem II is a photochemical reaction center that catalyzes the light-driven oxidation of water to molecular oxygen. Water oxidation is the distinctive photochemical reaction that permitted the evolution of oxygenic photosynthesis and the eventual rise of Eukaryotes. At what point during the history of life an ancestral photosystem evolved the capacity to oxidize water still remains unknown.Here we study the evolution of the core reaction center proteins of Photosystem II using sequence and structural comparisons in combination with Bayesian relaxed molecular clocks. Our results indicate that a homodimeric photosystem with sufficient oxidizing power to split water had already appeared in the early Archean about a billion years before the most recent common ancestor of all described Cyanobacteria capable of oxygenic photosynthesis, and well before the diversification of some of the known groups of anoxygenic photosynthetic bacteria. Based on a structural and functional rationale we hypothesize that this early Archean photosystem was capable of water oxidation and had already evolved some level of protection against the formation of reactive oxygen species, which would place primordial forms of oxygenic photosynthesis at a very early stage in the evolutionary history of life.

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“…FtsH peptidases are core elements of the proteolytic machinery in eubacteria and eukaryotic organelles. While there is only one gene copy in the enterobacterium E. coli , the genomes of simple cyanobacteria already contain four copies (Shao et al , 2018, Fig. 1).…”

Section: Resultsmentioning

confidence: 99%

“…Ycf2 belongs to the FtsH12/FtsHi1,2,4,5-Ycf2-NAD-MDH complex, the ATP-driven motor associated with the TIC complex Tic20/Tic56/Tic100/Tic214(Ycf1) that imports pre-proteins across the chloroplast envelopes (Kikuchi et al , 2013, 2018; Nakai, 2015, 2018; Schreier et al , 2018). On the other hand, bacteria belonging to the Firmicutes were found to have paralogs to the FtsH/FtsHi enzymes that were acquired via horizontal gene transfer (Shao et al , 2018). More detailed work is required to determine whether the FtsH12/FtsHi complex and Ycf2 originate from a chloroplast-encoded FtsH of an ancestral endosymbiont (Kikuchi et al , 2018) or from other bacteria via horizontal gene transfer (Shao et al , 2018).…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, bacteria belonging to the Firmicutes were found to have paralogs to the FtsH/FtsHi enzymes that were acquired via horizontal gene transfer (Shao et al , 2018). More detailed work is required to determine whether the FtsH12/FtsHi complex and Ycf2 originate from a chloroplast-encoded FtsH of an ancestral endosymbiont (Kikuchi et al , 2018) or from other bacteria via horizontal gene transfer (Shao et al , 2018). FtsHs are important for photosystem repair in cyanobacteria and chloroplasts and multiplied very early, probably accompanying the evolution of photosynthesis (Bailey et al , 2002; Silva et al , 2003; Zaltsman et al , 2005; Komenda et al , 2006; Shao et al , 2018).…”

Section: Discussionmentioning

confidence: 99%

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