Bacterial lifestyle in a deep-sea hydrothermal vent chimney revealed by the genome sequence of the thermophilic bacterium Deferribacter desulfuricans SSM1.
Bacterial lifestyle in a deep-sea hydrothermal vent chimney revealed by the genome sequence of the thermophilic bacterium Deferribacter desulfuricans SSM1.
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DOI：
10.1093/dnares/dsq005
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发表时间：
2010-06
期刊：
影响因子：
--
通讯作者：
Takai K
中科院分区：
文献类型：
--
作者：
Takaki Y;Shimamura S;Nakagawa S;Fukuhara Y;Horikawa H;Ankai A;Harada T;Hosoyama A;Oguchi A;Fukui S;Fujita N;Takami H;Takai K
从热液喷口烟囱中分离到的嗜热硫还原细菌--脱铁菌SMM1的全基因组序列已测定完毕。基因组包括一个2234 389碱基的单环染色体和308 544个碱基的巨质粒。基因组中编码的许多基因与三角洲蛋白细菌中硫酸盐或硫酸盐还原细菌物种的基因最相似。重建的中枢代谢表现出一种异养的生活方式，主要由C1到C3的有机物驱动，例如甲酸盐、乙酸盐和丙酮酸，也表明自养不能通过还原的三羧酸循环来实现，这可能是由于缺乏依赖于ATP的柠檬酸裂解酶。此外，基因组还编码许多化学受体、趋化系统和信号转导机制的基因。这些信号网络可能与该细菌多样的能量代谢有关，并可能为脱硫葡萄球菌SSM1在热液喷口附近的物理和化学波动环境中茁壮成长提供生态生理优势。这是脱铁菌门的第一个基因组序列。
The complete genome sequence of the thermophilic sulphur-reducing bacterium, Deferribacter desulfuricans SMM1, isolated from a hydrothermal vent chimney has been determined. The genome comprises a single circular chromosome of 2 234 389 bp and a megaplasmid of 308 544 bp. Many genes encoded in the genome are most similar to the genes of sulphur- or sulphate-reducing bacterial species within Deltaproteobacteria. The reconstructed central metabolisms showed a heterotrophic lifestyle primarily driven by C1 to C3 organics, e.g. formate, acetate, and pyruvate, and also suggested that the inability of autotrophy via a reductive tricarboxylic acid cycle may be due to the lack of ATP-dependent citrate lyase. In addition, the genome encodes numerous genes for chemoreceptors, chemotaxis-like systems, and signal transduction machineries. These signalling networks may be linked to this bacterium's versatile energy metabolisms and may provide ecophysiological advantages for D. desulfuricans SSM1 thriving in the physically and chemically fluctuating environments near hydrothermal vents. This is the first genome sequence from the phylum Deferribacteres.
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影响因子：
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