We present the first two complete genomes of the Janthinobacterium lividum species, namely strains EIF1 and EIF2, which both possess the ability to synthesize violacein. The violet pigment violacein is a secondary metabolite with antibacterial, antifungal, antiviral, and antitumoral properties. Both strains were isolated from environmental oligotrophic water ponds in Göttingen. The strains were phylogenetically classified by average nucleotide identity (ANI) analysis and showed a species assignment to J. lividum with 97.72% (EIF1) and 97.66% (EIF2) identity. These are the first complete genome sequences of strains belonging to the species J. lividum. The genome of strain EIF1 consists of one circular chromosome (6,373,589 bp) with a GC-content of 61.98%. The genome contains 5,551 coding sequences, 122 rRNAs, 93 tRNAs, and 1 tm-RNA. The genome of EIF2 comprises one circular chromosome (6,399,352 bp) with a GC-content of 61.63% and a circular plasmid p356839 (356,839 bp) with a GC-content of 57.21%. The chromosome encodes 5,691 coding sequences, 122 rRNAs, 93 tRNAs, and 1 tm-RNA and the plasmid harbors 245 coding sequences. In addition to the highly conserved chromosomally encoded violacein operon, the plasmid comprises a nonribosomal peptide synthetase cluster with similarity to xenoamicin, which is a bioactive compound effective against protozoan parasites.

中文翻译：

---

Janthinobacterium lividum EIF1 和 EIF2 的第一个完整基因组序列及其比较基因组分析。

我们介绍了紫色 Janthinobacterium lividum物种的前两个完整基因组，即菌株 EIF1 和 EIF2，它们都具有合成紫罗兰的能力。紫色颜料 violacein 是一种次级代谢产物，具有抗菌、抗真菌、抗病毒和抗肿瘤特性。这两种菌株都是从哥廷根的环境贫营养水池中分离出来的。这些菌株通过平均核苷酸同一性 (ANI) 分析进行系统发育分类，并显示出对J. lividum的物种分配，具有 97.72% (EIF1) 和 97.66% (EIF2) 同一性。这些是属于J. lividum物种的第一个完整基因组序列. 菌株 EIF1 的基因组由一个环状染色体 (6,373,589 bp) 组成，GC 含量为 61.98%。该基因组包含 5,551 个编码序列、122 个 rRNA、93 个 tRNA 和 1 个 tm-RNA。EIF2 的基因组包含一条环状染色体 (6,399,352 bp)，GC 含量为 61.63%，以及一个环状质粒 p356839 (356,839 bp)，GC 含量为 57.21%。染色体编码 5,691 个编码序列、122 个 rRNA、93 个 tRNA 和 1 个 tm-RNA，质粒包含 245 个编码序列。除了高度保守的染色体编码紫罗兰素操纵子外，该质粒还包含一个与异诺霉素相似的非核糖体肽合成酶簇，异霉素是一种有效对抗原生动物寄生虫的生物活性化合物。