ArticleWorld journal of microbiology & biotechnology2023
Gene cloning and characterization of a novel recombinant 40-kDa heat shock protein from Mesobacillus persicus B48.
Article in World journal of microbiology & biotechnology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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1 citing paper in PubMed, 1 citations in OpenAlex.
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6 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The present study reports the recognition and characterization of the gene encoding the co-chaperone DnaJ in the halophilic strain Mesobacillus persicus B48. The new extracted gene was sequenced and cloned in E. coli, followed by protein purification using a C-terminal His-tag. The stability and function of the recombinant DnaJ protein under salt and pH stress conditions were evaluated. SDS-PAGE revealed a band on nearly 40-kDa region. The homology model structure of new DnaJ demonstrated 56% similarity to the same protein from Streptococcus pneumonia. Fluorescence spectra indicated several hydrophobic residues located on the protein surface, which is consistent with the misfolded polypeptide recognition function of DnaJ. Spectroscopic results showed 56% higher carbonic anhydrase activity in the presence of the recombinant DnaJ homolog compared to its absence. In addition, salt resistance experiments showed that the survival of recombinant E. coli+DnaJ was 2.1 times more than control cells in 0.5 M NaCl. Furthermore, the number of recombinant E. coli BL21+DnaJ colonies was 7.7 times that of the control colonies in pH 8.5. Based on the results, DnaJ from the M. persicus can potentially be employed for improving the functional features of enzymes and other proteins in various applications.
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