Genomic data mining of an Antarctic deep-sea actinobacterium, Janibacter limosus P3-3-X1
2019
Su, Shiyuan | Liao, Li | Yu, Yong | Zhang, Jin | Chen, Bo
Janibacter limosus P3-3-X1, a psychrotolerant deep-sea actinobacterium isolated from the Southern Ocean, was completely sequenced and analyzed for its biotechnological potential in bioremediation and natural product biosynthesis. The circular genome contained 3.5 Mb with a high GC content of 70.44 mol%. Genomic data mining revealed a gene cluster for degrading phenol and its derivatives, including a multi-component phenol hydroxylase and a meta-cleavage pathway. The strain was shown to grow on phenol as its sole carbon source, supporting the findings of genomic analysis. Many more genes encoding for monooxygenases, dioxygenases and other aromatic compound degradation proteins involved in xenobiotics degradation were detected. Multiple natural product biosynthesis gene clusters were predicted as well. The genome sequencing and data mining provide insights into the bioremediation ability and biosynthetic potential of the Antarctic actinobacterium, and promote further experimental verification and exploration.
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