Herein, we report the complete genome sequence of Pseudoalteromonas sp. PS1M3 (= NCBI 87791), which is a psychrotrophic bacterium that inhabits in seabed off the Boso Peninsula, Japan Trench. Analysis of the genomic sequence revealed that PS1M3 possesses 2 circular chromosomal DNAs and 2 circular plasmid DNAs. The genome of PS1M3 had a total size of 4,351,630 bp, an average GC content of 39.9%, and contained a total of 3811 predicted protein coding sequences, 28 rRNAs, and 100 tRNAs. The Kyoto Encyclopedia of Genes and Genomes (KEGG) was utilized to annotate the genes and KofamKOALA within KEGG assigned a gene cluster involved in glycogen biosynthesis and metabolic pathways with regard to heavy metal resistance (copper; cop and mercury; mer), indicating that PS1M3 can potentially use a stored glycogen as an energy source under oligotrophic environment and cope with multi-heavy metal contamination. To assess available genome relatedness indices, whole-genome average nucleotide identity analysis was examined using the complete genome sequences of Pseudoalteromonas spp., showing that 67.29–97.40% sequence similarity with PS1M3. This study may be useful in understanding the roles of a psychrotrophic Pseudoalteromonas in cold deep-sea sediment adaptation mechanisms.

在此，我们报告了Pseudoalteromonas sp.的完整基因组序列。PS1M3 (= NCBI 87791 )，是一种嗜冷菌，栖息在日本海沟房总半岛附近的海底。基因组序列分析表明，PS1M3 拥有 2 个环状染色体 DNA 和 2 个环状质粒 DNA。PS1M3基因组总大小为4,351,630 bp，平均GC含量为39.9%，共包含3811个预测蛋白编码序列、28个rRNA和100​​个tRNA。Kyoto Encyclopedia of Genes and Genomes (KEGG) 用于注释基因，KEGG 中的 KofamKOALA 分配了一个基因簇，该基因簇涉及糖原生物合成和重金属抗性代谢途径（铜；cop 和汞；mer), 表明 PS1M3 有可能在贫营养环境下使用储存的糖原作为能源并应对多种重金属污染。为了评估可用的基因组相关性指数，使用假交替单胞菌属的完整基因组序列检查了全基因组平均核苷酸同一性分析，显示与 PS1M3 的序列相似性为 67.29-97.40%。这项研究可能有助于了解嗜冷假交替单胞菌在寒冷​​的深海沉积物适应机制中的作用。