Crassaminicella sp. 143-21, a putative new species isolated from deep-sea hydrothermal vent chimney on the Central Indian Ridge (CIR), is an anaerobic, thermophilic and rod-shaped bacterium belonging to the family Clostridiaceae. In this study, we present the complete genome sequence of strain 143-21, comprising 2,756,133 bp with a G + C content of 31.1%. In total, 2427 protein coding genes, 121 tRNA genes and 33 rRNA genes were obtained. Genomic analysis of strain 143-21 revealed that numerous genes related to organic matter transport and catabolism, including peptide transport, amino acid transport, saccharide transport, ethanolamine transport and corresponding metabolic pathways. Further, the genome contains a large proportion of genes involved in translation, ribosomal structure, and signal transduction. These genes might facilitate microbial survival in deep-sea hydrothermal vent environment. The genome of strain 143-21 will be helpful for further understanding its adaptive strategies in the deep-sea hydrothermal vent environment.

Crassaminicella sp。143-21是从印度中脊（CIR）深海热液喷口烟囱中分离出的推定新种，是梭状芽孢杆菌科的厌氧嗜热棒状细菌. 在本研究中，我们展示了菌株 143-21 的完整基因组序列，包括 2,756,133 bp，G + C 含量为 31.1%。共获得蛋白质编码基因2427个，tRNA基因121个，rRNA基因33个。菌株143-21的基因组分析揭示了许多与有机物转运和分解代谢相关的基因，包括肽​​转运、氨基酸转运、糖类转运、乙醇胺转运和相应的代谢途径。此外，基因组包含大部分涉及翻译、核糖体结构和信号转导的基因。这些基因可能促进深海热液喷口环境中的微生物生存。菌株143-21的基因组将有助于进一步了解其在深海热液喷口环境中的适应策略。