A denitrifying bacterium Halomonas sp. SS10-MC5, was isolated from a deep-sea hydrothermal vent chimney sample of the Indian Ocean. Here we described the complete genome of strain SS10-MC5 which has one circular chromosome of 4,441,120 bp with a mean G + C content of 66.12 mol%. The complete genome harbors 4094 predicted protein-encoding genes, 65 tRNA genes as well as four 16S-23S-5S rRNA operons. Genes involved in denitrification, assimilation, PHA synthesis, stress response, and so on, were identified in this genome. These metabolic features and related genes revealed genetic basis for the adaptation to the marine environment, which help to further understand its adaptive evolution and ecological role in submarine hydrothermal environments.

一种反硝化细菌Halomonas sp。SS10-MC5 是从印度洋的深海热液喷口烟囱样本中分离出来的。在这里，我们描述了菌株 SS10-MC5 的完整基因组，它具有一条 4,441,120 bp 的环状染色体，平均 G + C 含量为 66.12 mol%。完整的基因组包含 4094 个预测的蛋白质编码基因、65 个 tRNA 基因以及四个 16S-23S-5S rRNA 操纵子。在该基因组中鉴定了参与反硝化、同化、PHA 合成、应激反应等的基因。这些代谢特征和相关基因揭示了适应海洋环境的遗传基础，有助于进一步了解其在海底热液环境中的适应性进化和生态作用。