Prokaryotic origins of the non-animal peroxidase superfamily and organelle-mediated transmission to eukaryotes
Prokaryotic origins of the non-animal peroxidase superfamily and organelle-mediated transmission to eukaryotes
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DOI：
10.1016/j.ygeno.2007.01.006
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发表时间：
2007-05-01
期刊：
影响因子：
4.4
通讯作者：
Dunand, Christophe
中科院分区：
文献类型：
--
作者：
Passardi, Filippo;Bakalovic, Nenad;Dunand, Christophe
植物、真菌和细菌过氧化物酶超家族的成员已知存在于各种生物中。在测序项目中的广泛搜索发现了包含这个超家族序列的生物体。I类过氧化物酶，细胞色素c过氧化物酶(CCP)、抗坏血酸过氧化物酶(APx)和过氧化氢酶过氧化物酶(CP)，已知存在于细菌、真菌和植物中，但现在已在各种原生动物中发现。CCP序列在大多数具有线粒体的生物体中都被检测到，除了绿色植物，绿色植物只具有抗坏血酸过氧化物酶。APX序列以前只在绿色植物中观察到，但在通过次生内共生获得叶绿体的叶绿体原生生物中也发现了APX序列。已知存在于原核生物和子囊菌中的CP序列在一些担子菌中也被检测到，偶尔在一些原生生物中也被检测到。II类过氧化物酶参与木质素的生物降解，仅在担子菌中发现。事实上，只在三个目中发现了II类过氧化物酶，尽管在不同的拟青霉亚目中发现了退化形式。III类过氧化物酶是高等植物特有的酶，它们的进化被认为与陆地植物的出现有关。然而，我们已经发现，在陆地定居之前，一些绿藻中存在III类过氧化物酶。过氧化物酶在所有主要类群(脊椎动物除外)中的存在使它们成为了解导致每个真核生物类群祖先出现的早期进化事件的强大标记基因。(C)2007 Elsevier Inc.保留所有权利。
Members of the superfamily of plant, fungal, and bacterial peroxidases are known to be present in a wide variety of living organisms. Extensive searching within sequencing projects identified organisms containing sequences of this superfamily. Class I peroxidases, cytochrome c peroxidase (CcP), ascorbate peroxidase (APx), and catalase peroxidase (CP), are known to be present in bacteria, fungi, and plants, but have now been found in various protists. CcP sequences were detected in most mitochondria-possessing organisms except for green plants, which possess only ascorbate peroxidases. APx sequences had previously been observed only in green plants but were also found in chloroplastic protists, which acquired chloroplasts by secondary endosymbiosis. CP sequences that are known to be present in prokaryotes and in Ascomycetes were also detected in some Basidiomycetes and occasionally in some protists. Class II peroxidases are involved in lignin biodegradation and are found only in the Homobasidiomycetes. In fact class II peroxidases were identified in only three orders, although degenerate forms were found in different Pezizomycota orders. Class III peroxidases are specific for higher plants, and their evolution is thought to be related to the emergence of the land plants. We have found, however, that class III peroxidases are present in some green algae, which predate land colonization. The presence of peroxidases in all major phyla (except vertebrates) makes them powerful marker genes for understanding the early evolutionary events that led to the appearance of the ancestors of each eukaryotic group. (c) 2007 Elsevier Inc. All rights reserved.