Secretome analysis of alkaliphilic bacterium Bacillus lehensis G1 in response to pH changes

Microbiological Research
How Lie LingRosli Md Illias

Abstract

Bacillus lehensis G1 is an alkaliphilic bacterium that is capable of surviving in environments up to pH 11. Secretome related to bacterial acclimation in alkaline environment has been less studied compared to cytoplasmic and membrane proteome. The aim of this study was to gain better understanding of bacterial acclimation to alkaline media through analyzing extracellular proteins of B. lehensis. The pH range for B. lehensis growth was conducted, and two-dimensional electrophoresis and MALDI-TOF/TOF MS analysis were conducted to characterize changes in protein profiling in B. lehensis cultured at pH 8 and pH 11 when compared with those cultured at pH 10 (optimal growth pH). B. lehensis could grow well at pH ranging from 8 to 11 in which the bacteria showed to posses thinner flagella at pH 11. Proteomic analyses demonstrated that five proteins were up-regulated and 13 proteins were down-regulated at pH 8, whereas at pH 11, 14 proteins were up-regulated and 8 were down-regulated. Majority of the differentially expressed proteins were involved in the cell wall, main glycolytic pathways, the metabolism of amino acids and related molecules and some proteins of unknown function. A total of 40 differentially expressed protein spots cor...Continue Reading

Citations

Jan 18, 2020·International Journal of Systematic and Evolutionary Microbiology·Bora ShinWoojun Park
Oct 23, 2019·International Journal of Molecular Sciences·Pierre AlbinaBenjamin Erable
Apr 15, 2020·Environmental Science and Pollution Research International·Pierre AlbinaBenjamin Erable
Jan 3, 2021·Applied Microbiology and Biotechnology·Yuhong LaiLushan Wang

❮ Previous
Next ❯