Phylogenetic relationships among prokaryotic and eukaryotic catalases
Phylogenetic relationships among prokaryotic and eukaryotic catalases
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DOI：
10.1093/oxfordjournals.molbev.a025838
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发表时间：
1997-09-01
影响因子：
10.7
通讯作者：
Loewen, PC
中科院分区：
文献类型：
--
作者：
Klotz, MG;Klassen, GR;Loewen, PC
共获得74个过氧化氢酶蛋白序列，包括29个细菌序列、8个真菌序列、7个动物序列和30个植物序列，其中70个用于系统发育重建。结果树的核心揭示了独特的，独立的植物和动物过氧化氢酶组，两组真菌过氧化氢酶和三组细菌过氧化氢酶。王国的唯一重叠发生在一个分支内，涉及真菌和细菌的大亚基酶。另一个真菌分支与动物酶密切相关。类群I细菌过氧化氢酶与植物酶的关系更为密切，包括革兰氏阳性李斯特菌seeligeri， dein - ococccus radiodurans和γ -proteobacteria。III组细菌序列与真菌和动物序列关系更密切，包括来自广泛细菌的酶，包括高gc和低gc革兰氏阳性，变形杆菌和拟杆菌种。TI组由不同来源的大亚基过氧化氢酶组成，包括革兰氏阳性（低gc芽胞杆菌和高gc分枝杆菌）、变形菌和丝状真菌曲霉。这些数据可以用两个基因复制事件来解释，这两个基因复制事件产生了至少三个过氧化氢酶基因家族成员，这些成员随后根据环境需求而进化。水平基因转移可能是造成细菌和真菌大亚基过氧化氢酶混合的第II组的原因。
Seventy-four catalase protein sequences, including 29 bacterial, 8 fungal, 7 animal, and 30 plant sequences, were compiled, and 70 were used for phylogenetic reconstruction. The core of the resulting tree revealed unique, separate groups of plant and animal catalases, two groups of fungal catalases, and three groups of bacterial catalases. The only overlap of kingdoms occurred within one branch and involved fungal and bacterial large-subunit enzymes. The other fungal branch was closely linked to the group of animal enzymes. Group I bacterial catalases were more closely related to the plant enzymes and contained such diverse taxa as the Gram-positive Listeria seeligeri, Dein-ocococcus radiodurans, and gamma-proteobacteria. Group III bacterial sequences were more closely related to fungal and animal sequences and included enzymes from a broad range of bacteria including high-and low-GC Gram positives, proteobacteria, and a bacteroides species. Group TI was composed of large-subunit catalases from diverse sources including Gram positives (low-GC Bacilli and high-GC Mycobacteria), proteobacteria, and species of the filamentous fungus Aspergillus. These data can be interpreted in terms of two gene duplication events that produced a minimum of three catalase gene family members that subsequently evolved in response to environmental demands. Horizontal gene transfer may have been responsible for the group II mixture of bacterial and fungal large-subunit catalases.