ArticleWorld journal of microbiology & biotechnology2024
An oxalate decarboxylase-like cupin domain containing protein is involved in imparting acid stress tolerance in Bacillus amyloliquefaciens MBNC.
Article in World journal of microbiology & biotechnology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 2 citations in OpenAlex.
- Genome-wide association studies builds a predictive model and reveals novel resistance features for macrolide-resistant Bordetella pertussis.The Journal of antimicrobial chemotherapy · 2026Article
- Functional diversification of oxalate decarboxylases in terms of enzymatic activity, morphosporogenesis, stress regulation and virulence inFrontiers in microbiology · 2025Article
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8 authors at 1 institution in 1 country.
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Abstract
We report here the structural and functional properties of an oxalate decarboxylase (OxDC)-like cupin domain-containing protein of Bacillus amyloliquefaciens MBNC and its role in imparting tolerance to acid stress conditions. Quantitative real-time PCR (qPCR) analysis revealed 32-fold and 20-fold upregulation of the target gene [(OxDC')cupin] under acetic acid stress and hydrochloric acid stress, respectively, indicating its association with the acid stress response. Bacterial cells with targeted inactivation of the (OxDC')cupin gene using the pMUTIN4 vector system showed decreased growth and survival rate in acidic pH, with drastically reduced exopolysaccharide production. In Silico protein-protein interaction studies revealed seven genes (viz. glmS, nagA, nagB, tuaF, tuaF, gcvT, and ykgA) related to cell wall biosynthesis and biofilm production to interact with OxDC-like cupin domain containing protein. While all these seven genes were upregulated in B. amyloliquefaciens MBNC after 6 h of exposure to pH 4.5, the mutant cells containing the inactivated (OxDC')cupin gene displayed significantly lower expression (RQ: 0.001-0.02) (compared to the wild-type cells) in both neutral and acidic pH. Our results indicate that the OxDC-like cupin domain containing protein is necessary for cell wall biosynthesis and biofilm production in Bacillus amyloliquefaciens MBNC for survival in acid-stress conditions.
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