Biotechnology Bulletin ›› 2023, Vol. 39 ›› Issue (2): 232-242.doi: 10.13560/j.cnki.biotech.bull.1985.2022-0612

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Whole Genome Sequencing and Analysis of an Anti Gram-positive Bacterium Gordonia WA4-43

HE Meng-ying(), LIU Wen-bin, LIN Zhen-ming, LI Er-tong, WANG Jie, JIN Xiao-bao()   

  1. College of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guangdong Key Laboratory of Pharmaceutical Bioactive Substances, Guangzhou 510006
  • Received:2022-05-19 Online:2023-02-26 Published:2023-03-07

Abstract:

WA4-43 from the intestinal tract of cockroaches was the first Gordonia that was resistant to gram-positive bacteria. Whole-genome sequencing and comparative genome analysis of WA4-43 revealed the commonness and difference between WA4-43 and other Gordonia, providing a basis for subsequent research. Strain WA4-43 had inhibitory activity only against gram-positive bacteria. The strain WA4-43 was identified as G. terrae by morphological characteristics and molecular biological identification. Genome-wide bioinformatics analysis showed that the strain had a genome size of 5.44 Mb, GC content of 67.76%, and 4 963 protein coding genes, including 3 563, 4 178 and 1 870 genes annotated in GO, COG and KEGG databases, respectively. AntiSMASH predicted 13 secondary metabolite gene clusters in 8 types with an average homology of(22.67±24.72)%. PRISM 4 was used to predict compounds in gene clusters. Comparative genome analysis showed that the G. terrae gene cluster was conserved, but its homology was significantly lower than that of the known gene cluster, and it had the potential to synthesize new compounds.

Key words: Gordonia, whole genome sequencing, secondary metabolites, resistant to gram-positive bacteria, comparative genome