Escherichia coli Study Reveals Significant Effects on Bacillus Strains' Protease Activity

Strategic Insights -

Research conducted at the National Academy of Sciences of Ukraine has shown that isolated intracellular and extracellular lipopolysaccharides (LPS) of Escherichia coli can significantly stimulate the protease activity of various Bacillus strains. The study found that both LPS1 and LPS2 of E. coli 23 increased the elastase activity of Bacillus sp. IMV B-7883 by 600% and 416%, respectively. Additionally, LPS2 of E. coli 23 exhibited the greatest stimulation of fibrinogenolytic activity, reaching 200%.

Key Takeaways:

  • The study demonstrated that LPS of Escherichia coli can substantially enhance the protease activity of Bacillus strains, with both LPS1 and LPS2 showing significant effects.
  • The elastase activity of Bacillus sp. IMV B-7883 was increased by 600% and 416% when treated with LPS2 and LPS1 of E. coli 23, respectively.
  • The LPS2 of E. coli 23 stimulated fibrinogenolytic activity in all studied Bacillus strains, with the greatest stimulation recorded at 200%.
  • The research indicates that the LPS of E. coli can modulate the protease activity of Bacillus strains, highlighting potential applications in biotechnology and medicine.
  • L. D. Varbanets, a researcher at the Institute of Microbiology and Virology named after D. K. Zabolotny, emphasized the significance of this study, stating that it contributes to the understanding of the interactions between E. coli and Bacillus strains.
  • The study included additional authors, O. S. Brovarska, O. V. Gudzenko, K. G. Garkava, and A. R. Makarenko, all from the National Academy of Sciences of Ukraine, Kyiv, Ukraine.

Statistics:

  • The study reported a 600% increase in elastase activity of Bacillus sp. IMV B-7883 when treated with LPS2 of E. coli 23.
  • The LPS1 of E. coli 23 stimulated elastase activity by 416%.
  • The study recorded a 200% increase in fibrinogenolytic activity in all Bacillus strains treated with LPS2 of E. coli 23.

Sources:

  • Influence of lipopolysaccharides of Escherichia coli on the protease activity of several Bacillus strains. The Ukrainian Biochemical Journal, 2025,97(4):94-101. (The Ukrainian Biochemical Journal - http://ukrbiochemjournal.org/).
  • The publisher for The Ukrainian Biochemical Journal is National Academy of Sciences of Ukraine, Palladin Institute of Biochemistry.
  • A free version of this journal article is available at https://doi-org.sdpl.idm.oclc.org/10.15407/ubj97.04.094.