Early emergence of the FtsH proteases involved in photosystem II repair

Early emergence of the FtsH proteases involved in photosystem II repair
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参与光系统 II 修复的 FtsH 蛋白酶的早期出现

DOI:
10.1007/s11099-018-0769-9
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发表时间:
2018
期刊:
影响因子:
2.7
通讯作者:
Shao S
Shao S
中科院分区:
生物学4区
文献类型:
--
作者:
Shao S

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在PSII修复过程中,受损D1的有效降解是由类囊体膜中的一组专用FtsH蛋白酶进行的。在这里,我们调查是否FtsH的演变可以举行的线索,产氧光合作用的起源。超过6000 FtsH蛋白酶序列的系统发育分析表明,有三个主要组的FtsH蛋白酶起源于细菌的最后一个共同祖先的基因复制事件,并参与PSII修复的FtsH蛋白酶形成一个独特的分支分支之前的分歧FtsH蛋白酶发现在所有组的缺氧光合细菌。此外,我们表明,FtsH蛋白酶在光养细菌的系统发育树是类似的I型和II型反应中心蛋白。我们的结论是FtsH蛋白酶的合成与光合水氧化化学的早期起源是一致的。
Efficient degradation of damaged D1 during the repair of PSII is carried out by a set of dedicated FtsH proteases in the thylakoid membrane. Here we investigated whether the evolution of FtsH could hold clues to the origin of oxygenic photosynthesis. A phylogenetic analysis of over 6000 FtsH protease sequences revealed that there are three major groups of FtsH proteases originating from gene duplication events in the last common ancestor of bacteria, and that the FtsH proteases involved in PSII repair form a distinct clade branching out before the divergence of FtsH proteases found in all groups of anoxygenic phototrophic bacteria. Furthermore, we showed that the phylogenetic tree of FtsH proteases in phototrophic bacteria is similar to that for Type I and Type II reaction centre proteins. We conclude that the phylogeny of FtsH proteases is consistent with an early origin of photosynthetic water oxidation chemistry.
DOI: 10.1371/journal.pone.0151250
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